high
7.8
CWE
444
Advisory Published
Updated

CVE-2021-41436

First published: Fri Nov 19 2021(Updated: )

An HTTP request smuggling in web application in ASUS ROG Rapture GT-AX11000, RT-AX3000, RT-AX55, RT-AX56U, RT-AX56U_V2, 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 unauthenticated attacker to DoS via sending a specially crafted HTTP packet.

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
All of
ASUS ROG Rapture GT-AX11000 Firmware<3.0.0.4.386.45898
ASUS GT-AX11000 Firmware
All of
ASUS TUF Gaming AX3000 V2 Firmware<3.0.0.4.386.45898
ASUS routers
All of
ASUS RT-AX55 Firmware<3.0.0.4.386.45898
ASUS routers
All of
ASUS RT-AX56U V2 firmware<3.0.0.4.386.45898
ASUS RT-AX56U firmware
All of
ASUS RT-AX56U V2 firmware<3.0.0.4.386.45898
ASUS RT-AX56U V2 firmware
All of
ASUS RT-AX58U Firmware<3.0.0.4.386.45898
ASUS RT-AX58U Firmware
All of
Asus RT-AX82U firmware<3.0.0.4.386.45898
Asus RT-AX82U firmware
All of
ASUS RT-AX82U GUNDAM EDITION<3.0.0.4.386.45898
ASUS RT-AX82U GUNDAM EDITION
All of
ASUS RT-AX86U ZAKU II EDITION firmware<3.0.0.4.386.45898
ASUS RT-AX86
All of
ASUS RT-AX86S<3.0.0.4.386.45898
ASUS RT-AX86S firmware
All of
ASUS RT-AX86U ZAKU II EDITION<3.0.0.4.386.45898
ASUS RT-AX86U ZAKU II EDITION firmware
All of
ASUS RT-AX88U Firmware<3.0.0.4.386.45898
ASUS RT-AX88U Firmware
All of
ASUS RT-AX92U Firmware<3.0.0.4.386.45898
ASUS RT-AX92U Firmware
All of
ASUS TUF Gaming AX3000<3.0.0.4.386.45898
ASUS TUF Gaming AX3000 firmware
All of
ASUS TUF Gaming AX5400<3.0.0.4.386.45898
ASUS TUF-AX5400 firmware
All of
Asus XD6 Firmware<3.0.0.4.386.45898
ASUS ZenWiFi XD6 Firmware
All of
ASUS ZenWiFi AX (xt8) Firmware<3.0.0.4.386.45898
ASUS ZenWiFi AX (xt8)
All of
ASUS RT-AX68U<3.0.0.4.386.45911
ASUS RT-AX68U Firmware
ASUS ROG Rapture GT-AX11000 Firmware<3.0.0.4.386.45898
ASUS GT-AX11000 Firmware
ASUS TUF Gaming AX3000 V2 Firmware<3.0.0.4.386.45898
ASUS routers
ASUS RT-AX55 Firmware<3.0.0.4.386.45898
ASUS routers
ASUS RT-AX56U V2 firmware<3.0.0.4.386.45898
ASUS RT-AX56U firmware
ASUS RT-AX56U V2 firmware<3.0.0.4.386.45898
ASUS RT-AX56U V2 firmware
ASUS RT-AX58U Firmware<3.0.0.4.386.45898
ASUS RT-AX58U Firmware
Asus RT-AX82U firmware<3.0.0.4.386.45898
Asus RT-AX82U firmware
ASUS RT-AX82U GUNDAM EDITION<3.0.0.4.386.45898
ASUS RT-AX82U GUNDAM EDITION
ASUS RT-AX86U ZAKU II EDITION firmware<3.0.0.4.386.45898
ASUS RT-AX86
ASUS RT-AX86S<3.0.0.4.386.45898
ASUS RT-AX86S firmware
ASUS RT-AX86U ZAKU II EDITION<3.0.0.4.386.45898
ASUS RT-AX86U ZAKU II EDITION firmware
ASUS RT-AX88U Firmware<3.0.0.4.386.45898
ASUS RT-AX88U Firmware
ASUS RT-AX92U Firmware<3.0.0.4.386.45898
ASUS RT-AX92U Firmware
ASUS TUF Gaming AX3000<3.0.0.4.386.45898
ASUS TUF Gaming AX3000 firmware
ASUS TUF Gaming AX5400<3.0.0.4.386.45898
ASUS TUF-AX5400 firmware
Asus XD6 Firmware<3.0.0.4.386.45898
ASUS ZenWiFi XD6 Firmware
ASUS ZenWiFi AX (xt8) Firmware<3.0.0.4.386.45898
ASUS ZenWiFi AX (xt8)
ASUS RT-AX68U<3.0.0.4.386.45911
ASUS RT-AX68U Firmware

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2021-41436?

    CVE-2021-41436 is classified as a high severity vulnerability due to its potential to allow HTTP request smuggling in affected ASUS routers.

  • How do I fix CVE-2021-41436?

    To fix CVE-2021-41436, update your affected ASUS router firmware to the latest version provided by ASUS.

  • Which ASUS models are affected by CVE-2021-41436?

    CVE-2021-41436 affects multiple ASUS routers including the GT-AX11000, RT-AX3000, RT-AX55, and several others.

  • What is HTTP request smuggling and how does it relate to CVE-2021-41436?

    HTTP request smuggling is a technique that exploits discrepancies in the interpretation of HTTP requests between different servers or proxies, which is the issue exploited by CVE-2021-41436.

  • What symptoms might indicate an exploitation of CVE-2021-41436?

    Symptoms of exploitation of CVE-2021-41436 may include unusual router behavior, unexpected logs, or unauthorized access attempts.

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