CVE-2021-41435: Critical severity ASUS Gt-ax11000 Firmware vulnerability

Published Nov 19, 2021
·
Updated

A brute-force protection bypass in CAPTCHA protection in ASUS ROG Rapture GT-AX11000, RT-AX3000, RT-AX55, RT-AX56U, RT-AX56UV2, RT-AX58U, RT-AX82U, RT-AX82U GUNDAM EDITION, RT-AX86 Series(RT-AX86U/RT-AX86S), RT-AX86U ZAKU II EDITION, RT-AX88U, RT-AX92U, TUF Gaming AX3000, TUF Gaming AX5400 (TUF-AX5400), ASUS ZenWiFi XD6, ASUS ZenWiFi AX (XT8) before 3.0.0.4.386.45898, and RT-AX68U before 3.0.0.4.386.45911, allows a remote attacker to attempt any number of login attempts via sending a specific HTTP request.

Affected Software

72 affected components
All of the following
ASUS Gt-ax11000 Firmware<3.0.0.4.386.45898
ASUS GT-AX11000
All of the following
ASUS RT-AX3000 firmware<3.0.0.4.386.45898
ASUS RT-AX3000
All of the following
ASUS Rt-ax55 Firmware<3.0.0.4.386.45898
ASUS RT-AX55
All of the following
ASUS Rt-ax56u Firmware<3.0.0.4.386.45898
ASUS RT-AX56U
All of the following
ASUS Rt-ax56u V2 Firmware<3.0.0.4.386.45898
ASUS RT-AX56U V2
All of the following
ASUS Rt-ax58u Firmware<3.0.0.4.386.45898
ASUS RT-AX58U
All of the following
ASUS Rt-ax82u Firmware<3.0.0.4.386.45898
ASUS RT-AX82U
All of the following
ASUS Rt-ax82u Gundam Edition Firmware<3.0.0.4.386.45898
ASUS RT-AX82U GUNDAM EDITION
All of the following
ASUS Rt-ax86u Firmware<3.0.0.4.386.45898
ASUS RT-AX86U
All of the following
ASUS Rt-ax86s Firmware<3.0.0.4.386.45898
ASUS RT-AX86S
All of the following
ASUS Rt-ax86u Zaku Ii Edition Firmware<3.0.0.4.386.45898
ASUS RT-AX86U ZAKU II EDITION
All of the following
ASUS Rt-ax88u Firmware<3.0.0.4.386.45898
ASUS RT-AX88U
All of the following
ASUS Rt-ax92u Firmware<3.0.0.4.386.45898
ASUS RT-AX92U
All of the following
ASUS Tuf Gaming Ax3000 Firmware<3.0.0.4.386.45898
ASUS TUF Gaming AX3000
All of the following
ASUS Tuf-ax5400 Firmware<3.0.0.4.386.45898
ASUS TUF-AX5400
All of the following
ASUS Zenwifi Xd6 Firmware<3.0.0.4.386.45898
ASUS ZenWiFi XD6
All of the following
ASUS Zenwifi Ax \(xt8\) Firmware<3.0.0.4.386.45898
ASUS Zenwifi Ax \(xt8\)
All of the following
ASUS Rt-ax68u Firmware<3.0.0.4.386.45911
ASUS RT-AX68U
ASUS Gt-ax11000 Firmware<3.0.0.4.386.45898
ASUS GT-AX11000
ASUS RT-AX3000 firmware<3.0.0.4.386.45898
ASUS RT-AX3000
ASUS Rt-ax55 Firmware<3.0.0.4.386.45898
ASUS RT-AX55
ASUS Rt-ax56u Firmware<3.0.0.4.386.45898
ASUS RT-AX56U
ASUS Rt-ax56u V2 Firmware<3.0.0.4.386.45898
ASUS RT-AX56U V2
ASUS Rt-ax58u Firmware<3.0.0.4.386.45898
ASUS RT-AX58U
ASUS Rt-ax82u Firmware<3.0.0.4.386.45898
ASUS RT-AX82U
ASUS Rt-ax82u Gundam Edition Firmware<3.0.0.4.386.45898
ASUS RT-AX82U GUNDAM EDITION
ASUS Rt-ax86u Firmware<3.0.0.4.386.45898
ASUS RT-AX86U
ASUS Rt-ax86s Firmware<3.0.0.4.386.45898
ASUS RT-AX86S
ASUS Rt-ax86u Zaku Ii Edition Firmware<3.0.0.4.386.45898
ASUS RT-AX86U ZAKU II EDITION
ASUS Rt-ax88u Firmware<3.0.0.4.386.45898
ASUS RT-AX88U
ASUS Rt-ax92u Firmware<3.0.0.4.386.45898
ASUS RT-AX92U
ASUS Tuf Gaming Ax3000 Firmware<3.0.0.4.386.45898
ASUS TUF Gaming AX3000
ASUS Tuf-ax5400 Firmware<3.0.0.4.386.45898
ASUS TUF-AX5400
ASUS Zenwifi Xd6 Firmware<3.0.0.4.386.45898
ASUS ZenWiFi XD6
ASUS Zenwifi Ax \(xt8\) Firmware<3.0.0.4.386.45898
ASUS Zenwifi Ax \(xt8\)
ASUS Rt-ax68u Firmware<3.0.0.4.386.45911
ASUS RT-AX68U

Event History

Nov 19, 2021
CVE Published
via MITRE·11:26 AM
Data Sourced
via MITRE·11:26 AM
Description
Sep 3, 58477
Event
via NVD·02:30 AM
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Frequently Asked Questions

1

What is the severity of CVE-2021-41435?

CVE-2021-41435 has a medium severity rating due to its potential for brute-force protection bypass.

2

How do I fix CVE-2021-41435?

To fix CVE-2021-41435, update your affected ASUS router firmware to the latest version available on the ASUS support website.

3

Which ASUS devices are affected by CVE-2021-41435?

CVE-2021-41435 affects multiple ASUS routers including ROG Rapture GT-AX11000 and RT-AX3000, among others.

4

Is there a way to mitigate CVE-2021-41435 if I cannot update my firmware?

If you cannot update your firmware, consider disabling remote access and using strong, unique passwords to mitigate the risks associated with CVE-2021-41435.

5

Who should be concerned about CVE-2021-41435?

Users of the affected ASUS routers should be concerned about CVE-2021-41435, especially if their devices are exposed to the internet.

Contact

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