CVE-2025-14654: tenda ac20_firmware

Vulnerability summary

CVE-2025-14654 is a high (CVSS 9.0) vulnerability in tenda ac20_firmware. EPSS estimates a 3.33% chance of exploitation in the next 30 days, higher than 88.5% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 14-12-2025
   PublishedVulnerability first disclosed.
2. 24-02-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability was identified in Tenda AC20 16.03.08.12. The affected element is the function formSetPPTPUserList of the file /goform/setPptpUserList of the component httpd. Such manipulation of the argument list leads to stack-based buffer overflow. The attack can be executed remotely. The exploit is publicly available and might be used.

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
• 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.