CVE-2024-0541: tenda w9_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2024-0541 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in tenda w9_firmware. EPSS estimates a 1.30% chance of exploitation in the next 30 days, higher than 70.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 15-01-2024
   PublishedVulnerability first disclosed.
2. 12-05-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability was found in Tenda W9 1.0.0.7(4456). It has been declared as critical. Affected by this vulnerability is the function formAddSysLogRule of the component httpd. The manipulation of the argument sysRulenEn leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250711. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.