CVE-2025-51085: tenda ac8_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2025-51085 is a medium (CVSS 5.3) Stack-based Buffer Overflow vulnerability in tenda ac8_firmware. EPSS estimates a 7.35% chance of exploitation in the next 30 days, higher than 94.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 24-07-2025
   PublishedVulnerability first disclosed.
2. 05-07-2026
   Last modifiedVulnerability information updated.

Description

Tenda AC8V4 V16.03.34.06` was discovered to contain stack overflow at /goform/SetSysTimeCfg. The manipulation of the argument `timeZone` and `timeType` leads to stack-based buffer overflow.

• 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).