# What is CVE-2021-43702? > CVE-2021-43702 is a critical-severity flaw (CVSS 9.0) in Zenwifi Xd4s Firmware from Asus, published on 5 July 2022. 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 1.0%. If you run an affected version, plan in the vendor’s fix. Canonical page: https://www.precursorintelligence.com/what-is/cve-2021-43702 ## At a glance - **Verdict:** Fix this soon. Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. - **Precursor Intelligence risk score:** 57 out of 100 (Medium); action: Plan remediation. Kept up to date as the evidence changes. - **Severity:** Critical (CVSS 9.0 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:** 1.0% (latest exploit-likelihood forecast) - **Published:** 5 July 2022 - **Record last updated:** 18 July 2022 - **Main product:** Zenwifi Xd4s Firmware from Asus - **Affected products:** 186 ## What is CVE-2021-43702? In plain terms It can be attacked from anywhere on the internet with an ordinary user account, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline. ### The official description ASUS RT-A88U 3.0.0.4.386_45898 is vulnerable to Cross Site Scripting (XSS). The ASUS router admin panel does not sanitize the WiFI logs correctly, if an attacker was able to change the SSID of the router with a custom payload, they could achieve stored XSS on the device. ### What kind of flaw is it? - CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') ### How an attack on it works - Where an attacker can be: Anywhere on the internet - How hard it is to pull off: Easy: no special conditions - Login needed first: An ordinary user account - Does someone have to click: Yes, a person has to take an action - What an attacker gets: Can read data, change data and take it offline Severity vector: `CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H` ## Is CVE-2021-43702 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 1.0%. That can change at any time, which is why we keep watching. Exploit likelihood over the last 7 days: 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%, 1.0%. ### Timeline - 5 July 2022: Published - 18 July 2022: Record last updated ### How Precursor Intelligence ranks it CVE-2021-43702 scores **57 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-2021-43702? The published record lists 186 products. - [Zenwifi Xd4s Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_xd4s_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [4g-Ac53u](https://www.precursorintelligence.com/product/asus/4g-ac53u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [4g-Ac53u Firmware](https://www.precursorintelligence.com/product/asus/4g-ac53u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [4g-Ac68u](https://www.precursorintelligence.com/product/asus/4g-ac68u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [4g-Ac68u Firmware](https://www.precursorintelligence.com/product/asus/4g-ac68u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rog Rapture Gt-Ac2900](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ac2900) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rog Rapture Gt-Ac2900 Firmware](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ac2900_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rog Rapture Gt-Ac5300](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ac5300) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rog Rapture Gt-Ac5300 Firmware](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ac5300_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rog Rapture Gt-Ax11000](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ax11000) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rog Rapture Gt-Ax11000 Firmware](https://www.precursorintelligence.com/product/asus/rog_rapture_gt-ax11000_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1200](https://www.precursorintelligence.com/product/asus/rt-ac1200) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1200 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1200_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1200e](https://www.precursorintelligence.com/product/asus/rt-ac1200e) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1200e Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1200e_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1200g](https://www.precursorintelligence.com/product/asus/rt-ac1200g) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1200g Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1200g_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - Rt-Ac1200g+ by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - Rt-Ac1200g+ Firmware by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1200gu](https://www.precursorintelligence.com/product/asus/rt-ac1200gu) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1200gu Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1200gu_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1200hp](https://www.precursorintelligence.com/product/asus/rt-ac1200hp) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1200hp Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1200hp_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - Rt-Ac1300g+ by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - Rt-Ac1300g+ Firmware by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1300uhp](https://www.precursorintelligence.com/product/asus/rt-ac1300uhp) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1300uhp Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1300uhp_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1750](https://www.precursorintelligence.com/product/asus/rt-ac1750) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1750 B1](https://www.precursorintelligence.com/product/asus/rt-ac1750_b1_) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1750 B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1750_b1__firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1750 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1750_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1900](https://www.precursorintelligence.com/product/asus/rt-ac1900) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1900 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1900_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1900p](https://www.precursorintelligence.com/product/asus/rt-ac1900p) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1900p Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1900p_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac1900u](https://www.precursorintelligence.com/product/asus/rt-ac1900u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac1900u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac1900u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac2200](https://www.precursorintelligence.com/product/asus/rt-ac2200) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac2200 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac2200_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac2400](https://www.precursorintelligence.com/product/asus/rt-ac2400) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac2400 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac2400_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac2600](https://www.precursorintelligence.com/product/asus/rt-ac2600) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac2600 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac2600_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac2900](https://www.precursorintelligence.com/product/asus/rt-ac2900) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac2900 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac2900_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac3100](https://www.precursorintelligence.com/product/asus/rt-ac3100) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac3100 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac3100_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac3200](https://www.precursorintelligence.com/product/asus/rt-ac3200) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac3200 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac3200_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac51u](https://www.precursorintelligence.com/product/asus/rt-ac51u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac51u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac51u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - Rt-Ac51u+ by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - Rt-Ac51u+ Firmware by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac52u B1](https://www.precursorintelligence.com/product/asus/rt-ac52u_b1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac52u B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac52u_b1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac53](https://www.precursorintelligence.com/product/asus/rt-ac53) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac53 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac53_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac5300](https://www.precursorintelligence.com/product/asus/rt-ac5300) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac5300 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac5300_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac55u](https://www.precursorintelligence.com/product/asus/rt-ac55u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac55u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac55u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac55uhp](https://www.precursorintelligence.com/product/asus/rt-ac55uhp) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac55uhp Firmware](https://www.precursorintelligence.com/product/asus/rt-ac55uhp_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac56r](https://www.precursorintelligence.com/product/asus/rt-ac56r) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac56r Firmware](https://www.precursorintelligence.com/product/asus/rt-ac56r_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac56s](https://www.precursorintelligence.com/product/asus/rt-ac56s) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac56s Firmware](https://www.precursorintelligence.com/product/asus/rt-ac56s_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac56u](https://www.precursorintelligence.com/product/asus/rt-ac56u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac56u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac56u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac57u](https://www.precursorintelligence.com/product/asus/rt-ac57u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac57u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac57u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac58u](https://www.precursorintelligence.com/product/asus/rt-ac58u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac58u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac58u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac65p](https://www.precursorintelligence.com/product/asus/rt-ac65p) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac65p Firmware](https://www.precursorintelligence.com/product/asus/rt-ac65p_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac65u](https://www.precursorintelligence.com/product/asus/rt-ac65u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac65u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac65u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac66r](https://www.precursorintelligence.com/product/asus/rt-ac66r) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac66r Firmware](https://www.precursorintelligence.com/product/asus/rt-ac66r_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac66u](https://www.precursorintelligence.com/product/asus/rt-ac66u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac66u B1](https://www.precursorintelligence.com/product/asus/rt-ac66u_b1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac66u B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-ac66u_b1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac66u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac66u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - Rt-Ac66u+ by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - Rt-Ac66u+ Firmware by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac66w](https://www.precursorintelligence.com/product/asus/rt-ac66w) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac66w Firmware](https://www.precursorintelligence.com/product/asus/rt-ac66w_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac68p](https://www.precursorintelligence.com/product/asus/rt-ac68p) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac68p Firmware](https://www.precursorintelligence.com/product/asus/rt-ac68p_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac68r](https://www.precursorintelligence.com/product/asus/rt-ac68r) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac68r Firmware](https://www.precursorintelligence.com/product/asus/rt-ac68r_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac68u](https://www.precursorintelligence.com/product/asus/rt-ac68u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac68u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac68u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac68uf](https://www.precursorintelligence.com/product/asus/rt-ac68uf) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac68uf Firmware](https://www.precursorintelligence.com/product/asus/rt-ac68uf_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac68w](https://www.precursorintelligence.com/product/asus/rt-ac68w) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac68w Firmware](https://www.precursorintelligence.com/product/asus/rt-ac68w_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac85p](https://www.precursorintelligence.com/product/asus/rt-ac85p) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac85p Firmware](https://www.precursorintelligence.com/product/asus/rt-ac85p_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac85u](https://www.precursorintelligence.com/product/asus/rt-ac85u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac85u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac85u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac86u](https://www.precursorintelligence.com/product/asus/rt-ac86u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac86u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac86u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac87r](https://www.precursorintelligence.com/product/asus/rt-ac87r) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac87r Firmware](https://www.precursorintelligence.com/product/asus/rt-ac87r_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac87u](https://www.precursorintelligence.com/product/asus/rt-ac87u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac87u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac87u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ac88u](https://www.precursorintelligence.com/product/asus/rt-ac88u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ac88u Firmware](https://www.precursorintelligence.com/product/asus/rt-ac88u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Acrh13](https://www.precursorintelligence.com/product/asus/rt-acrh13) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Acrh13 Firmware](https://www.precursorintelligence.com/product/asus/rt-acrh13_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Acrh17](https://www.precursorintelligence.com/product/asus/rt-acrh17) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Acrh17 Firmware](https://www.precursorintelligence.com/product/asus/rt-acrh17_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax3000](https://www.precursorintelligence.com/product/asus/rt-ax3000) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax3000 Firmware](https://www.precursorintelligence.com/product/asus/rt-ax3000_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax55](https://www.precursorintelligence.com/product/asus/rt-ax55) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax55 Firmware](https://www.precursorintelligence.com/product/asus/rt-ax55_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax56u](https://www.precursorintelligence.com/product/asus/rt-ax56u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax56u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax56u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax58u](https://www.precursorintelligence.com/product/asus/rt-ax58u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax58u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax58u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax68u](https://www.precursorintelligence.com/product/asus/rt-ax68u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax68u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax68u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax82u](https://www.precursorintelligence.com/product/asus/rt-ax82u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax82u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax82u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax86u](https://www.precursorintelligence.com/product/asus/rt-ax86u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax86u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax86u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax88u](https://www.precursorintelligence.com/product/asus/rt-ax88u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax88u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax88u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax89x](https://www.precursorintelligence.com/product/asus/rt-ax89x) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax89x Firmware](https://www.precursorintelligence.com/product/asus/rt-ax89x_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-Ax92u](https://www.precursorintelligence.com/product/asus/rt-ax92u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-Ax92u Firmware](https://www.precursorintelligence.com/product/asus/rt-ax92u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - Rt-N12+ B1 by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - Rt-N12+ B1 Firmware by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N12d1](https://www.precursorintelligence.com/product/asus/rt-n12d1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N12d1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n12d1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N12e B1](https://www.precursorintelligence.com/product/asus/rt-n12e_b1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N12e B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n12e_b1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N12e C1](https://www.precursorintelligence.com/product/asus/rt-n12e_c1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N12e C1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n12e_c1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N12hp B1](https://www.precursorintelligence.com/product/asus/rt-n12hp_b1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N12hp B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n12hp_b1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N12vp B1](https://www.precursorintelligence.com/product/asus/rt-n12vp_b1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N12vp B1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n12vp_b1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N14uhp](https://www.precursorintelligence.com/product/asus/rt-n14uhp) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N14uhp Firmware](https://www.precursorintelligence.com/product/asus/rt-n14uhp_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N18u](https://www.precursorintelligence.com/product/asus/rt-n18u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N18u Firmware](https://www.precursorintelligence.com/product/asus/rt-n18u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N19](https://www.precursorintelligence.com/product/asus/rt-n19) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N19 Firmware](https://www.precursorintelligence.com/product/asus/rt-n19_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N66c1](https://www.precursorintelligence.com/product/asus/rt-n66c1) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N66c1 Firmware](https://www.precursorintelligence.com/product/asus/rt-n66c1_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N66r](https://www.precursorintelligence.com/product/asus/rt-n66r) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N66r Firmware](https://www.precursorintelligence.com/product/asus/rt-n66r_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N66u](https://www.precursorintelligence.com/product/asus/rt-n66u) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N66u Firmware](https://www.precursorintelligence.com/product/asus/rt-n66u_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Rt-N66w](https://www.precursorintelligence.com/product/asus/rt-n66w) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Rt-N66w Firmware](https://www.precursorintelligence.com/product/asus/rt-n66w_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Tuf Gaming Ax3000 V2](https://www.precursorintelligence.com/product/asus/tuf_gaming_ax3000_v2) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Tuf Gaming Ax3000 V2 Firmware](https://www.precursorintelligence.com/product/asus/tuf_gaming_ax3000_v2_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Tuf Gaming Ax5400](https://www.precursorintelligence.com/product/asus/tuf_gaming_ax5400) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Tuf Gaming Ax5400 Firmware](https://www.precursorintelligence.com/product/asus/tuf_gaming_ax5400_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Pro Xt12](https://www.precursorintelligence.com/product/asus/zenwifi__pro_xt12) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Pro Xt12 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi__pro_xt12_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Ac](https://www.precursorintelligence.com/product/asus/zenwifi_ac) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Ac Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_ac_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Ac Mini](https://www.precursorintelligence.com/product/asus/zenwifi_ac_mini) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Ac Mini Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_ac_mini_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Ax](https://www.precursorintelligence.com/product/asus/zenwifi_ax) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Ax Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_ax_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Ax Hybrid](https://www.precursorintelligence.com/product/asus/zenwifi_ax_hybrid) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Ax Hybrid Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_ax_hybrid_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Ax Mini](https://www.precursorintelligence.com/product/asus/zenwifi_ax_mini) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Ax Mini Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_ax_mini_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Et8](https://www.precursorintelligence.com/product/asus/zenwifi_et8) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Et8 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_et8_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Pro Et12](https://www.precursorintelligence.com/product/asus/zenwifi_pro_et12) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Pro Et12 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_pro_et12_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Xd4s](https://www.precursorintelligence.com/product/asus/zenwifi_xd4s) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Xd5](https://www.precursorintelligence.com/product/asus/zenwifi_xd5) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Xd5 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_xd5_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Xd6](https://www.precursorintelligence.com/product/asus/zenwifi_xd6) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Xd6 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_xd6_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 - [Zenwifi Xt9](https://www.precursorintelligence.com/product/asus/zenwifi_xt9) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Hardware): version not specified - [Zenwifi Xt9 Firmware](https://www.precursorintelligence.com/product/asus/zenwifi_xt9_firmware) by [Asus](https://www.precursorintelligence.com/vendors/asus) (Operating system): 3.0.0.4.386.46061 ## How do I fix CVE-2021-43702? 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 - [asus.com](https://www.asus.com/uk/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AC88U/) (Product, Vendor advisory) - [kroll.com](https://www.kroll.com/en/insights/publications/cyber/cve-2021-43702-from-discovery-to-patch) (Exploit, Third-party advisory) ## Questions ### What is CVE-2021-43702? CVE-2021-43702 is a critical-severity flaw in Zenwifi Xd4s Firmware from Asus, published on 5 July 2022. It can be attacked from anywhere on the internet with an ordinary user account, but a person has to take an action first. If it works, the attacker can read data, change data and take it offline. ### How serious is CVE-2021-43702? It scores 9.0 out of 10 on the CVSS severity scale, which is critical. Our risk score for CVE-2021-43702 is 57 out of 100, which is Medium. Its action is "Plan remediation". Not confirmed as exploited yet, but serious or likely enough that it should not wait for a quiet month. ### Is CVE-2021-43702 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 1.0%. That can change at any time, which is why we keep watching. ### Which versions does CVE-2021-43702 affect? For Zenwifi Xd4s Firmware from Asus: 3.0.0.4.386.46061. The record lists 186 products in all, each with its versions, under "Who is affected" on this page. ### How do I fix CVE-2021-43702? 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-2021-43702 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