CVE-2024-0536: tenda w9_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2024-0536 is a critical (CVSS 9.8) Stack-based Buffer Overflow vulnerability in tenda w9_firmware. EPSS estimates a 1.40% chance of exploitation in the next 30 days, higher than 72.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 15-01-2024
   PublishedVulnerability first disclosed.
2. 17-06-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability, which was classified as critical, has been found in Tenda W9 1.0.0.7(4456). Affected by this issue is the function setWrlAccessList of the component httpd. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-250706 is the identifier assigned to this vulnerability. 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.