# What is CVE-2021-3519? > CVE-2021-3519 is a medium-severity flaw (CVSS 6.8) in Ideacentre C5-14mb05 Firmware from Lenovo, published on 12 November 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 0.2%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2021-3519 ## 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:** 23 out of 100 (Low); action: Monitor. Kept up to date as the evidence changes. - **Severity:** Medium (CVSS 6.8 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:** 0.2% (latest exploit-likelihood forecast) - **Published:** 12 November 2021 - **Record last updated:** 19 November 2021 - **Main product:** Ideacentre C5-14mb05 Firmware from Lenovo - **Affected products:** 119 ## What is CVE-2021-3519? In plain terms An attacker has to be physically at the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### The official description A vulnerability was reported in some Lenovo Desktop models that could allow unauthorized access to the boot menu, when the "BIOS Password At Boot Device List" BIOS setting is Yes. ### What kind of flaw is it? - CWE-287: Improper Authentication ### How an attack on it works - Where an attacker can be: Physically at the device - 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 read data, change data and take it offline Severity vector: `CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H` ## Is CVE-2021-3519 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 0.2%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%, 0.2%. ### Timeline - 12 November 2021: Published - 19 November 2021: Record last updated ### How Precursor Intelligence ranks it CVE-2021-3519 scores **23 out of 100 (Low)**, with the action "Monitor". 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-2021-3519? The published record lists 119 products. Versions are as published: "before o4hkt33a" means every version up to, but not including, o4hkt33a. - [Ideacentre C5-14mb05 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_c5-14mb05_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before o4hkt33a - [Ideacentre 510s-07ick Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_510s-07ick_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m30kt24a, before m30kt23a - [Thinkcentre M75s Gen 2 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75s_gen_2_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3bkt24a, before m3akt35a - [Thinkcentre M75t Gen 2 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75t_gen_2_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3bkt24a, before m3akt35a - [Ideacentre 3-07imb05](https://www.precursorintelligence.com/product/lenovo/ideacentre_3-07imb05) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 3-07imb05 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_3-07imb05_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2vkt18a - [Ideacentre 310s-08igm](https://www.precursorintelligence.com/product/lenovo/ideacentre_310s-08igm) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 310s-08igm Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_310s-08igm_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to m1tkt31a - [Ideacentre 5-14imb05](https://www.precursorintelligence.com/product/lenovo/ideacentre_5-14imb05) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 5-14imb05 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_5-14imb05_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before o4hkt33a - [Ideacentre 5-14iob6](https://www.precursorintelligence.com/product/lenovo/ideacentre_5-14iob6) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 5-14iob6 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_5-14iob6_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3gkt29a - [Ideacentre 510a-15arr](https://www.precursorintelligence.com/product/lenovo/ideacentre_510a-15arr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 510a-15arr Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_510a-15arr_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to o4dkt41a - [Ideacentre 510s-07icb](https://www.precursorintelligence.com/product/lenovo/ideacentre_510s-07icb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre 510s-07icb Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_510s-07icb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m22kt46a - [Ideacentre 510s-07ick](https://www.precursorintelligence.com/product/lenovo/ideacentre_510s-07ick) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre C5-14mb05](https://www.precursorintelligence.com/product/lenovo/ideacentre_c5-14mb05) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre Creator 5-14iob6](https://www.precursorintelligence.com/product/lenovo/ideacentre_creator_5-14iob6) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre Creator 5-14iob6 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_creator_5-14iob6_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3gkt29a - [Ideacentre G5-14imb05](https://www.precursorintelligence.com/product/lenovo/ideacentre_g5-14imb05) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre G5-14imb05 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_g5-14imb05_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before o4hkt33a - [Ideacentre Gaming 5-14iob6](https://www.precursorintelligence.com/product/lenovo/ideacentre_gaming_5-14iob6) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Ideacentre Gaming 5-14iob6 Firmware](https://www.precursorintelligence.com/product/lenovo/ideacentre_gaming_5-14iob6_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3gkt29a - Thinkcentre E75 T/s by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - Thinkcentre E75 T/s Firmware by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkcentre M60e Tiny](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m60e_tiny) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M60e Tiny Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m60e_tiny_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3skt1ea - [Thinkcentre M630e](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m630e) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M630e Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m630e_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m28kt36a - [Thinkcentre M70a](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70a) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70a Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70a_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to m2skt21a - [Thinkcentre M70a Gen 2](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70a_gen_2) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70a Gen 2 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70a_gen_2_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3nkt17a - [Thinkcentre M70c](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70c) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70c Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70c_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2vkt18a - [Thinkcentre M70q](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70q) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70q Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70q_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2wkt49a - [Thinkcentre M70s](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70s) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70s Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70s_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre M70t](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70t) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M70t Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m70t_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre M710e](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710e) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M710e Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710e_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m1zkt37a - [Thinkcentre M710s](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710s) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M710s Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710s_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkcentre M710t](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710t) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M710t Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m710t_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkcentre M720e](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m720e) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M720e Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m720e_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m30kt23a - [Thinkcentre M75n](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75n) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M75n Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75n_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m33kt21a - [Thinkcentre M75s Gen 2](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75s_gen_2) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M75t Gen 2](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m75t_gen_2) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M80q](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80q) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M80q Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80q_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2wkt49a - [Thinkcentre M80s](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80s) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M80s Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80s_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre M80t](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80t) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M80t Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m80t_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre M810z](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m810z) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M810z Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m810z_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m1ckt47a - [Thinkcentre M820z](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m820z) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M820z Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m820z_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m1nkt57a - [Thinkcentre M90a](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90a) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M90a Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90a_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2rkt47a - [Thinkcentre M90a Tiny](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90a_tiny) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M90q Tiny Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90q_tiny_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2wkt49a - [Thinkcentre M90s](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90s) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M90s Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90s_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre M90t](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90t) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre M90t Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_m90t_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2tkt3ca - [Thinkcentre Qt B415](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_b415) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre Qt B415 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_b415_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkcentre Qt M410](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_m410) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre Qt M410 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_m410_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkcentre Qt M415](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_m415) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkcentre Qt M415 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkcentre_qt_m415_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [Thinkstation P340](https://www.precursorintelligence.com/product/lenovo/thinkstation_p340) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P340 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p340_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before s08kt3fa - [Thinkstation P340 Tiny](https://www.precursorintelligence.com/product/lenovo/thinkstation_p340_tiny) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P340 Tiny Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p340_tiny_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2wkt49a - [Thinkstation P520](https://www.precursorintelligence.com/product/lenovo/thinkstation_p520) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P520 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p520_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to s03kt49a - [Thinkstation P520c](https://www.precursorintelligence.com/product/lenovo/thinkstation_p520c) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P520c Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p520c_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to s03kt49a - [Thinkstation P720](https://www.precursorintelligence.com/product/lenovo/thinkstation_p720) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P720 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p720_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before s04kt54a/s04kt54p - [Thinkstation P920](https://www.precursorintelligence.com/product/lenovo/thinkstation_p920) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [Thinkstation P920 Firmware](https://www.precursorintelligence.com/product/lenovo/thinkstation_p920_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before s04kt54a/s04kt54p - [V30a-22iml](https://www.precursorintelligence.com/product/lenovo/v30a-22iml) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V30a-22iml Firmware](https://www.precursorintelligence.com/product/lenovo/v30a-22iml_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m37kt26a - [V330](https://www.precursorintelligence.com/product/lenovo/v330) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V330 Firmware](https://www.precursorintelligence.com/product/lenovo/v330_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to m1tkt32a - [V50a-22imb](https://www.precursorintelligence.com/product/lenovo/v50a-22imb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V50a-22imb Firmware](https://www.precursorintelligence.com/product/lenovo/v50a-22imb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m36kt27a - [V50a-24imb](https://www.precursorintelligence.com/product/lenovo/v50a-24imb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V50a-24imb Firmware](https://www.precursorintelligence.com/product/lenovo/v50a-24imb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m36kt27a - [V50s-07imb](https://www.precursorintelligence.com/product/lenovo/v50s-07imb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V50s-07imb Firmware](https://www.precursorintelligence.com/product/lenovo/v50s-07imb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2vkt18a - [V50t-13imb](https://www.precursorintelligence.com/product/lenovo/v50t-13imb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V50t-13imb Firmware](https://www.precursorintelligence.com/product/lenovo/v50t-13imb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before o4hkt33a - [V50t-13imb G2](https://www.precursorintelligence.com/product/lenovo/v50t-13imb_g2) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V50t-13imb G2 Firmware](https://www.precursorintelligence.com/product/lenovo/v50t-13imb_g2_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m3gkt29a - [V520](https://www.precursorintelligence.com/product/lenovo/v520) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V520 Firmware](https://www.precursorintelligence.com/product/lenovo/v520_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [V520s](https://www.precursorintelligence.com/product/lenovo/v520s) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V520s Firmware](https://www.precursorintelligence.com/product/lenovo/v520s_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m16kt67a - [V530-15arr](https://www.precursorintelligence.com/product/lenovo/v530-15arr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V530-15arr Firmware](https://www.precursorintelligence.com/product/lenovo/v530-15arr_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to o4dkt41a - [V530-15icr](https://www.precursorintelligence.com/product/lenovo/v530-15icr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V530-15icr Firmware](https://www.precursorintelligence.com/product/lenovo/v530-15icr_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m2ykt29a - [V530s-07icb](https://www.precursorintelligence.com/product/lenovo/v530s-07icb) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V530s-07icb Firmware](https://www.precursorintelligence.com/product/lenovo/v530s-07icb_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m30kt23a - [V530s-07icr](https://www.precursorintelligence.com/product/lenovo/v530s-07icr) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V530s-07icr Firmware](https://www.precursorintelligence.com/product/lenovo/v530s-07icr_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): before m30kt23a - [V55t-15api](https://www.precursorintelligence.com/product/lenovo/v55t-15api) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Hardware): version not specified - [V55t-15api Firmware](https://www.precursorintelligence.com/product/lenovo/v55t-15api_firmware) by [Lenovo](https://www.precursorintelligence.com/vendors/lenovo) (Operating system): up to o4dkt41a - [Windows 10](https://www.precursorintelligence.com/product/microsoft/windows_10) by [Microsoft](https://www.precursorintelligence.com/vendors/microsoft) (Operating system): version not specified ## How do I fix CVE-2021-3519? 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 - [support.lenovo.com](https://support.lenovo.com/us/en/product_security/LEN-67440) (Vendor advisory) ## Questions ### What is CVE-2021-3519? CVE-2021-3519 is a medium-severity flaw in Ideacentre C5-14mb05 Firmware from Lenovo, published on 12 November 2021. An attacker has to be physically at the device without logging in, and nobody has to click anything. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2021-3519? It scores 6.8 out of 10 on the CVSS severity scale, which is medium. Our risk score for CVE-2021-3519 is 23 out of 100, which is Low. Its action is "Monitor". No sign of exploitation and a low forecast. Patch it in your normal update cycle. ### Is CVE-2021-3519 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 0.2%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2021-3519 affect? For Ideacentre C5-14mb05 Firmware from Lenovo: before o4hkt33a. The record lists 119 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2021-3519? 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-2021-3519 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