Vulnerability Monitor

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CVE-2021-41436


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.


Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 36 products from asus, from asus, from asus and 33 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2021-11-19T12:15:09.390

Last Modified

2024-11-21T06:26:15.047

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

10.0

Impact Score

6.9

Weaknesses
  • Type: Primary
    CWE-444

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System asus gt-ax11000_firmware < 3.0.0.4.386.45898 Yes
Hardware asus gt-ax11000 - No
Operating System asus rt-ax3000_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax3000 - No
Operating System asus rt-ax55_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax55 - No
Operating System asus rt-ax56u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax56u - No
Operating System asus rt-ax56u_v2_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax56u_v2 - No
Operating System asus rt-ax58u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax58u - No
Operating System asus rt-ax82u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax82u - No
Operating System asus rt-ax82u_gundam_edition_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax82u_gundam_edition - No
Operating System asus rt-ax82u_gundam_edition_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax82u_gundam_edition - No
Operating System asus rt-ax86u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax86u - No
Operating System asus rt-ax86s_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax86s - No
Operating System asus rt-ax86u_zaku_ii_edition_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax86u_zaku_ii_edition - No
Operating System asus rt-ax88u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax88u - No
Operating System asus rt-ax92u_firmware < 3.0.0.4.386.45898 Yes
Hardware asus rt-ax92u - No
Operating System asus tuf_gaming_ax3000_firmware < 3.0.0.4.386.45898 Yes
Hardware asus tuf_gaming_ax3000 - No
Operating System asus tuf-ax5400_firmware < 3.0.0.4.386.45898 Yes
Hardware asus tuf-ax5400 - No
Operating System asus zenwifi_xd6_firmware < 3.0.0.4.386.45898 Yes
Hardware asus zenwifi_xd6 - No
Operating System asus zenwifi_ax_\(xt8\)_firmware < 3.0.0.4.386.45898 Yes
Hardware asus zenwifi_ax_\(xt8\) - No
Operating System asus rt-ax68u_firmware < 3.0.0.4.386.45911 Yes
Hardware asus rt-ax68u - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For asus's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.