# What is CVE-2021-34714? > CVE-2021-34714 is a high-severity flaw (CVSS 7.4) in Fxos from Cisco, published on 23 September 2021. It is not on the list of flaws known to be exploited today. The latest forecast puts its chance of use in the next 30 days at 0.4%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2021-34714 ## At a glance - **Verdict:** Plan it in. No sign of exploitation and a low forecast. Patch it in your normal update cycle. - **Precursor Intelligence risk score:** 46 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** High (CVSS 7.4 out of 10) - **Known to be exploited:** No, not on the list of flaws known to be exploited today - **Chance of use in the next 30 days:** 0.4% (latest exploit-likelihood forecast) - **Published:** 23 September 2021 - **Record last updated:** 7 November 2023 - **Main product:** Fxos from Cisco - **Affected products:** 225 ## What is CVE-2021-34714? In plain terms An attacker has to be on the same local network without logging in, and nobody has to click anything. If it works, the attacker can take it offline. ### The official description A vulnerability in the Unidirectional Link Detection (UDLD) feature of Cisco FXOS Software, Cisco IOS Software, Cisco IOS XE Software, Cisco IOS XR Software, and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause an affected device to reload. This vulnerability is due to improper input validation of the UDLD packets. An attacker could exploit this vulnerability by sending specifically crafted UDLD packets to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The UDLD feature is disabled by default, and the conditions to exploit this vulnerability are strict. An attacker must have full control of a directly connected device. On Cisco IOS XR devices, the impact is limited to the reload of the UDLD process. ### What kind of flaw is it? - CWE-20: Improper Input Validation ### How an attack on it works - Where an attacker can be: On the same local network - How hard it is to pull off: Easy: no special conditions - Login needed first: No login needed - Does someone have to click: No, nobody has to do anything - What an attacker gets: Can take it offline Severity vector: `CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H` ## Is CVE-2021-34714 being exploited? Not that we know of It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.4%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.4%, 0.4%, 0.4%, 0.4%, 0.4%, 0.4%, 0.4%. ### Timeline - 23 September 2021: Published - 7 November 2023: Record last updated ### How Precursor Intelligence ranks it CVE-2021-34714 scores **46 out of 100 (Medium)**, with the action "Plan remediation". Every published flaw gets a risk score from 0 to 100, kept up to date as the evidence changes. Four things go into the score, from the one that counts most to the ones that count less: - Evidence it is being exploited: biggest factor - How severe it is: strong factor - How widely exposed it is: smaller factor - Threat activity around it: smaller factor 85 and above is Critical. Anything confirmed as exploited is always marked for an emergency patch, whatever its score. When this flaw matches software you track, it lands in your list with its score and the reasons behind it. ## Who is affected by CVE-2021-34714? The published record lists 225 products. Versions are as published: "2.2 to before 2.2.2.148" means from 2.2 up to, but not including, 2.2.2.148. - [Fxos](https://www.precursorintelligence.com/product/cisco/fxos) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): 2.2 to before 2.2.2.148, 2.3 to before 2.3.1.216, 2.4 to before 2.4.1.273, 2.6 to before 2.6.1.224, 2.7 to before 2.7.1.143, 2.8 to before 2.8.1.143, 2.9 to before 2.9.1.135 - [Firepower Extensible Operating System](https://www.precursorintelligence.com/product/cisco/firepower_extensible_operating_system) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): up to 8.4(3.115), up to 7.0(3)i7(9), up to 7.3(8)n1(1), up to 3.2(3o)a, up to 4.1(1a)a - [IOS](https://www.precursorintelligence.com/product/cisco/ios) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): up to 8.4(3.115), up to 7.0(3)i7(9), up to 7.3(8)n1(1), up to 3.2(3o)a, up to 4.1(1a)a - [IOS XE](https://www.precursorintelligence.com/product/cisco/ios_xe) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): up to 8.4(3.115), up to 7.0(3)i7(9), up to 7.3(8)n1(1), up to 3.2(3o)a, up to 4.1(1a)a - [IOS XR](https://www.precursorintelligence.com/product/cisco/ios_xr) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): up to 8.4(3.115), up to 7.0(3)i7(9), up to 7.3(8)n1(1), up to 3.2(3o)a, up to 4.1(1a)a - [NX-OS](https://www.precursorintelligence.com/product/cisco/nx-os) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Operating system): up to 8.4(3.115), up to 7.0(3)i7(9), up to 7.3(8)n1(1), up to 3.2(3o)a - [Firepower 4100](https://www.precursorintelligence.com/product/cisco/firepower_4100) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4110](https://www.precursorintelligence.com/product/cisco/firepower_4110) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4112](https://www.precursorintelligence.com/product/cisco/firepower_4112) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4115](https://www.precursorintelligence.com/product/cisco/firepower_4115) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4120](https://www.precursorintelligence.com/product/cisco/firepower_4120) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4125](https://www.precursorintelligence.com/product/cisco/firepower_4125) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4140](https://www.precursorintelligence.com/product/cisco/firepower_4140) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4145](https://www.precursorintelligence.com/product/cisco/firepower_4145) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 4150](https://www.precursorintelligence.com/product/cisco/firepower_4150) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300](https://www.precursorintelligence.com/product/cisco/firepower_9300) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-24](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-36](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-36) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-40](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-40) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-44](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-44) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-44 X 3](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-44_x_3) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-48](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-48) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-56](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-56) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 Sm-56 X 3](https://www.precursorintelligence.com/product/cisco/firepower_9300_sm-56_x_3) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 with 1 Sm-24 Module](https://www.precursorintelligence.com/product/cisco/firepower_9300_with_1_sm-24_module) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 with 1 Sm-36 Module](https://www.precursorintelligence.com/product/cisco/firepower_9300_with_1_sm-36_module) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 with 1 Sm-44 Module](https://www.precursorintelligence.com/product/cisco/firepower_9300_with_1_sm-44_module) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Firepower 9300 with 3 Sm-44 Module](https://www.precursorintelligence.com/product/cisco/firepower_9300_with_3_sm-44_module) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9000](https://www.precursorintelligence.com/product/cisco/mds_9000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9100](https://www.precursorintelligence.com/product/cisco/mds_9100) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9132t](https://www.precursorintelligence.com/product/cisco/mds_9132t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9134](https://www.precursorintelligence.com/product/cisco/mds_9134) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9140](https://www.precursorintelligence.com/product/cisco/mds_9140) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9148](https://www.precursorintelligence.com/product/cisco/mds_9148) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9148s](https://www.precursorintelligence.com/product/cisco/mds_9148s) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9148t](https://www.precursorintelligence.com/product/cisco/mds_9148t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9200](https://www.precursorintelligence.com/product/cisco/mds_9200) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9216](https://www.precursorintelligence.com/product/cisco/mds_9216) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9216a](https://www.precursorintelligence.com/product/cisco/mds_9216a) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9216i](https://www.precursorintelligence.com/product/cisco/mds_9216i) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9222i](https://www.precursorintelligence.com/product/cisco/mds_9222i) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9250i](https://www.precursorintelligence.com/product/cisco/mds_9250i) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9396s](https://www.precursorintelligence.com/product/cisco/mds_9396s) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9396t](https://www.precursorintelligence.com/product/cisco/mds_9396t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9500](https://www.precursorintelligence.com/product/cisco/mds_9500) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9506](https://www.precursorintelligence.com/product/cisco/mds_9506) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9509](https://www.precursorintelligence.com/product/cisco/mds_9509) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9513](https://www.precursorintelligence.com/product/cisco/mds_9513) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9700](https://www.precursorintelligence.com/product/cisco/mds_9700) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9706](https://www.precursorintelligence.com/product/cisco/mds_9706) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9710](https://www.precursorintelligence.com/product/cisco/mds_9710) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Mds 9718](https://www.precursorintelligence.com/product/cisco/mds_9718) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3000](https://www.precursorintelligence.com/product/cisco/nexus_3000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3016](https://www.precursorintelligence.com/product/cisco/nexus_3016) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3016q](https://www.precursorintelligence.com/product/cisco/nexus_3016q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3048](https://www.precursorintelligence.com/product/cisco/nexus_3048) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064](https://www.precursorintelligence.com/product/cisco/nexus_3064) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064-32t](https://www.precursorintelligence.com/product/cisco/nexus_3064-32t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064-T](https://www.precursorintelligence.com/product/cisco/nexus_3064-t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064-X](https://www.precursorintelligence.com/product/cisco/nexus_3064-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064t](https://www.precursorintelligence.com/product/cisco/nexus_3064t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3064x](https://www.precursorintelligence.com/product/cisco/nexus_3064x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3100](https://www.precursorintelligence.com/product/cisco/nexus_3100) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3100-V](https://www.precursorintelligence.com/product/cisco/nexus_3100-v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3100-Z](https://www.precursorintelligence.com/product/cisco/nexus_3100-z) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3100v](https://www.precursorintelligence.com/product/cisco/nexus_3100v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 31108pc-V](https://www.precursorintelligence.com/product/cisco/nexus_31108pc-v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 31108pv-V](https://www.precursorintelligence.com/product/cisco/nexus_31108pv-v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 31108tc-V](https://www.precursorintelligence.com/product/cisco/nexus_31108tc-v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 31128pq](https://www.precursorintelligence.com/product/cisco/nexus_31128pq) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3132c-Z](https://www.precursorintelligence.com/product/cisco/nexus_3132c-z) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3132q](https://www.precursorintelligence.com/product/cisco/nexus_3132q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3132q-V](https://www.precursorintelligence.com/product/cisco/nexus_3132q-v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3132q-X](https://www.precursorintelligence.com/product/cisco/nexus_3132q-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 3132q-X/3132q-Xl by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3132q-Xl](https://www.precursorintelligence.com/product/cisco/nexus_3132q-xl) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3164q](https://www.precursorintelligence.com/product/cisco/nexus_3164q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172](https://www.precursorintelligence.com/product/cisco/nexus_3172) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172pq](https://www.precursorintelligence.com/product/cisco/nexus_3172pq) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172pq-Xl](https://www.precursorintelligence.com/product/cisco/nexus_3172pq-xl) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 3172pq/pq-Xl by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172tq](https://www.precursorintelligence.com/product/cisco/nexus_3172tq) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172tq-32t](https://www.precursorintelligence.com/product/cisco/nexus_3172tq-32t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3172tq-Xl](https://www.precursorintelligence.com/product/cisco/nexus_3172tq-xl) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3200](https://www.precursorintelligence.com/product/cisco/nexus_3200) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3232c](https://www.precursorintelligence.com/product/cisco/nexus_3232c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3232c](https://www.precursorintelligence.com/product/cisco/nexus_3232c_) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3264c-E](https://www.precursorintelligence.com/product/cisco/nexus_3264c-e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3264q](https://www.precursorintelligence.com/product/cisco/nexus_3264q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3400](https://www.precursorintelligence.com/product/cisco/nexus_3400) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3408-S](https://www.precursorintelligence.com/product/cisco/nexus_3408-s) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 34180yc](https://www.precursorintelligence.com/product/cisco/nexus_34180yc) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 34200yc-Sm](https://www.precursorintelligence.com/product/cisco/nexus_34200yc-sm) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3432d-S](https://www.precursorintelligence.com/product/cisco/nexus_3432d-s) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3464c](https://www.precursorintelligence.com/product/cisco/nexus_3464c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3500](https://www.precursorintelligence.com/product/cisco/nexus_3500) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3500 Platform](https://www.precursorintelligence.com/product/cisco/nexus_3500_platform) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3524](https://www.precursorintelligence.com/product/cisco/nexus_3524) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3524-X](https://www.precursorintelligence.com/product/cisco/nexus_3524-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 3524-X/xl by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3524-Xl](https://www.precursorintelligence.com/product/cisco/nexus_3524-xl) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3548](https://www.precursorintelligence.com/product/cisco/nexus_3548) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3548-X](https://www.precursorintelligence.com/product/cisco/nexus_3548-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 3548-X/xl by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3548-Xl](https://www.precursorintelligence.com/product/cisco/nexus_3548-xl) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3600](https://www.precursorintelligence.com/product/cisco/nexus_3600) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 36180yc-R](https://www.precursorintelligence.com/product/cisco/nexus_36180yc-r) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 3636c-R](https://www.precursorintelligence.com/product/cisco/nexus_3636c-r) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5000](https://www.precursorintelligence.com/product/cisco/nexus_5000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5010](https://www.precursorintelligence.com/product/cisco/nexus_5010) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5020](https://www.precursorintelligence.com/product/cisco/nexus_5020) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5500](https://www.precursorintelligence.com/product/cisco/nexus_5500) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5548p](https://www.precursorintelligence.com/product/cisco/nexus_5548p) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5548up](https://www.precursorintelligence.com/product/cisco/nexus_5548up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5596t](https://www.precursorintelligence.com/product/cisco/nexus_5596t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5596up](https://www.precursorintelligence.com/product/cisco/nexus_5596up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5600](https://www.precursorintelligence.com/product/cisco/nexus_5600) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 56128p](https://www.precursorintelligence.com/product/cisco/nexus_56128p) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5624q](https://www.precursorintelligence.com/product/cisco/nexus_5624q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5648q](https://www.precursorintelligence.com/product/cisco/nexus_5648q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5672up](https://www.precursorintelligence.com/product/cisco/nexus_5672up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5672up-16g](https://www.precursorintelligence.com/product/cisco/nexus_5672up-16g) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 5696q](https://www.precursorintelligence.com/product/cisco/nexus_5696q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6000](https://www.precursorintelligence.com/product/cisco/nexus_6000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6001](https://www.precursorintelligence.com/product/cisco/nexus_6001) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6001p](https://www.precursorintelligence.com/product/cisco/nexus_6001p) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6001t](https://www.precursorintelligence.com/product/cisco/nexus_6001t) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6004](https://www.precursorintelligence.com/product/cisco/nexus_6004) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 6004x](https://www.precursorintelligence.com/product/cisco/nexus_6004x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000](https://www.precursorintelligence.com/product/cisco/nexus_7000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 10-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7000_10-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 18-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7000_18-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 4-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7000_4-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 9-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7000_9-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 Supervisor 1](https://www.precursorintelligence.com/product/cisco/nexus_7000_supervisor_1) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 Supervisor 2](https://www.precursorintelligence.com/product/cisco/nexus_7000_supervisor_2) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7000 Supervisor 2e](https://www.precursorintelligence.com/product/cisco/nexus_7000_supervisor_2e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7004](https://www.precursorintelligence.com/product/cisco/nexus_7004) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7009](https://www.precursorintelligence.com/product/cisco/nexus_7009) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7010](https://www.precursorintelligence.com/product/cisco/nexus_7010) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7018](https://www.precursorintelligence.com/product/cisco/nexus_7018) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700](https://www.precursorintelligence.com/product/cisco/nexus_7700) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 10-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7700_10-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 18-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7700_18-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 2-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7700_2-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 6-Slot](https://www.precursorintelligence.com/product/cisco/nexus_7700_6-slot) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 Supervisor 2e](https://www.precursorintelligence.com/product/cisco/nexus_7700_supervisor_2e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7700 Supervisor 3e](https://www.precursorintelligence.com/product/cisco/nexus_7700_supervisor_3e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7702](https://www.precursorintelligence.com/product/cisco/nexus_7702) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7706](https://www.precursorintelligence.com/product/cisco/nexus_7706) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7710](https://www.precursorintelligence.com/product/cisco/nexus_7710) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 7718](https://www.precursorintelligence.com/product/cisco/nexus_7718) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9000](https://www.precursorintelligence.com/product/cisco/nexus_9000) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9000 in ACI Mode](https://www.precursorintelligence.com/product/cisco/nexus_9000_in_aci_mode) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9000 in Standalone](https://www.precursorintelligence.com/product/cisco/nexus_9000_in_standalone) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9000 in Standalone NX-OS Mode](https://www.precursorintelligence.com/product/cisco/nexus_9000_in_standalone_nx-os_mode) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9000v](https://www.precursorintelligence.com/product/cisco/nexus_9000v) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9200](https://www.precursorintelligence.com/product/cisco/nexus_9200) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 92160yc-X](https://www.precursorintelligence.com/product/cisco/nexus_92160yc-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9221c](https://www.precursorintelligence.com/product/cisco/nexus_9221c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 92300yc](https://www.precursorintelligence.com/product/cisco/nexus_92300yc) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 92304qc](https://www.precursorintelligence.com/product/cisco/nexus_92304qc) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 92348gc-X](https://www.precursorintelligence.com/product/cisco/nexus_92348gc-x) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9236c](https://www.precursorintelligence.com/product/cisco/nexus_9236c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9272q](https://www.precursorintelligence.com/product/cisco/nexus_9272q) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9300](https://www.precursorintelligence.com/product/cisco/nexus_9300) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93108tc-EX](https://www.precursorintelligence.com/product/cisco/nexus_93108tc-ex) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93108tc-EX-24](https://www.precursorintelligence.com/product/cisco/nexus_93108tc-ex-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93108tc-Fx](https://www.precursorintelligence.com/product/cisco/nexus_93108tc-fx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93108tc-Fx-24](https://www.precursorintelligence.com/product/cisco/nexus_93108tc-fx-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93108tc-Fx3p](https://www.precursorintelligence.com/product/cisco/nexus_93108tc-fx3p) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93120tx](https://www.precursorintelligence.com/product/cisco/nexus_93120tx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93128](https://www.precursorintelligence.com/product/cisco/nexus_93128) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93128tx](https://www.precursorintelligence.com/product/cisco/nexus_93128tx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9316d-Gx](https://www.precursorintelligence.com/product/cisco/nexus_9316d-gx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180lc-EX](https://www.precursorintelligence.com/product/cisco/nexus_93180lc-ex) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180tc-EX](https://www.precursorintelligence.com/product/cisco/nexus_93180tc-ex) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-EX](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-ex) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-EX-24](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-ex-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-Fx](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-fx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-Fx-24](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-fx-24) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-Fx3](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-fx3) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93180yc-Fx3s](https://www.precursorintelligence.com/product/cisco/nexus_93180yc-fx3s) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93216tc-Fx2](https://www.precursorintelligence.com/product/cisco/nexus_93216tc-fx2) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93240yc-Fx2](https://www.precursorintelligence.com/product/cisco/nexus_93240yc-fx2) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9332c](https://www.precursorintelligence.com/product/cisco/nexus_9332c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9332pq](https://www.precursorintelligence.com/product/cisco/nexus_9332pq) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93360yc-Fx2](https://www.precursorintelligence.com/product/cisco/nexus_93360yc-fx2) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9336c-Fx2](https://www.precursorintelligence.com/product/cisco/nexus_9336c-fx2) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9336c-Fx2-E](https://www.precursorintelligence.com/product/cisco/nexus_9336c-fx2-e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9336pq](https://www.precursorintelligence.com/product/cisco/nexus_9336pq) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9336pq ACI Spine](https://www.precursorintelligence.com/product/cisco/nexus_9336pq_aci_spine) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9348gc-Fxp](https://www.precursorintelligence.com/product/cisco/nexus_9348gc-fxp) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 93600cd-Gx](https://www.precursorintelligence.com/product/cisco/nexus_93600cd-gx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9364c](https://www.precursorintelligence.com/product/cisco/nexus_9364c) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9364c-Gx](https://www.precursorintelligence.com/product/cisco/nexus_9364c-gx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9372px](https://www.precursorintelligence.com/product/cisco/nexus_9372px) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9372px-E](https://www.precursorintelligence.com/product/cisco/nexus_9372px-e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9372tx](https://www.precursorintelligence.com/product/cisco/nexus_9372tx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9372tx-E](https://www.precursorintelligence.com/product/cisco/nexus_9372tx-e) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9396px](https://www.precursorintelligence.com/product/cisco/nexus_9396px) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9396tx](https://www.precursorintelligence.com/product/cisco/nexus_9396tx) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9500](https://www.precursorintelligence.com/product/cisco/nexus_9500) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9500 Supervisor a](https://www.precursorintelligence.com/product/cisco/nexus_9500_supervisor_a) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 9500 Supervisor A+ by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9500 Supervisor B](https://www.precursorintelligence.com/product/cisco/nexus_9500_supervisor_b) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - Nexus 9500 Supervisor B+ by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9500r](https://www.precursorintelligence.com/product/cisco/nexus_9500r) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9504](https://www.precursorintelligence.com/product/cisco/nexus_9504) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9508](https://www.precursorintelligence.com/product/cisco/nexus_9508) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [Nexus 9516](https://www.precursorintelligence.com/product/cisco/nexus_9516) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6200](https://www.precursorintelligence.com/product/cisco/ucs_6200) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6248 Up Fabric Interconnect](https://www.precursorintelligence.com/product/cisco/ucs_6248_up_fabric_interconnect) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6248up](https://www.precursorintelligence.com/product/cisco/ucs_6248up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6296 Up Fabric Interconnect](https://www.precursorintelligence.com/product/cisco/ucs_6296_up_fabric_interconnect) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6296up](https://www.precursorintelligence.com/product/cisco/ucs_6296up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6300](https://www.precursorintelligence.com/product/cisco/ucs_6300) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6324](https://www.precursorintelligence.com/product/cisco/ucs_6324) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6324 Fabric Interconnect](https://www.precursorintelligence.com/product/cisco/ucs_6324_fabric_interconnect) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332](https://www.precursorintelligence.com/product/cisco/ucs_6332) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332 Fabric Interconnect](https://www.precursorintelligence.com/product/cisco/ucs_6332_fabric_interconnect) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332-16up](https://www.precursorintelligence.com/product/cisco/ucs_6332-16up) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6332-16up Fabric Interconnect](https://www.precursorintelligence.com/product/cisco/ucs_6332-16up_fabric_interconnect) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6400](https://www.precursorintelligence.com/product/cisco/ucs_6400) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified - [UCS 6454](https://www.precursorintelligence.com/product/cisco/ucs_6454) by [Cisco](https://www.precursorintelligence.com/vendors/cisco) (Hardware): version not specified ## How do I fix CVE-2021-34714? 1. **Check whether you run it.** Compare your versions with the affected products above. Not sure what you run? Precursor Intelligence can work it out from your public website, or you can pick it from a list. 2. **Apply the vendor’s fix.** Install the update named in the vendor’s advisory. We’ve put the advisory first in the list. 3. **If you can’t patch today.** Follow any mitigation the vendor publishes, and limit who can reach the affected system from the internet until the update is in. 4. **Keep an eye on it.** Track the product and we tell you as soon as we spot this flaw on the list of exploited flaws, or a jump in its exploit likelihood. ### References - [tools.cisco.com](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-nxos-xr-udld-dos-W5hGHgtQ) (Vendor advisory) ## Questions ### What is CVE-2021-34714? CVE-2021-34714 is a high-severity flaw in Fxos from Cisco, published on 23 September 2021. An attacker has to be on the same local network without logging in, and nobody has to click anything. If it works, the attacker can take it offline. ### How serious is CVE-2021-34714? It scores 7.4 out of 10 on the CVSS severity scale, which is high. Our risk score for CVE-2021-34714 is 46 out of 100, which is Medium. Its action is "Plan remediation". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2021-34714 being exploited? It is not on the list of flaws known to be exploited today. The latest forecast puts the chance of it being used in the next 30 days at 0.4%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2021-34714 affect? For Fxos from Cisco: 2.2 to before 2.2.2.148, 2.3 to before 2.3.1.216, 2.4 to before 2.4.1.273, 2.6 to before 2.6.1.224, 2.7 to before 2.7.1.143, 2.8 to before 2.8.1.143 and 1 more. The record lists 225 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2021-34714? Install the update the vendor names in its advisory, linked first under "How do I fix" on this page. If you can't patch today, follow the vendor's mitigation and limit who can reach the affected system from the internet. ## Does CVE-2021-34714 affect you? Precursor Intelligence keeps checking for you: - **Tell us what you run.** Pick your software from a list, or let us work it out from your website. - **We match it to every flaw.** Over 400,000 published flaws, checked against your list. - **Ranked by real-world risk.** Every flaw gets a 0 to 100 risk score, kept up to date, led by evidence criminals are using it. - **Told as soon as we know.** An alert by email, in the app or by webhook to your own tools. Start free (no card, nothing to install): https://www.precursorintelligence.com/register Book a demo: https://www.precursorintelligence.com/contact