CVE-2026-3768: Tenda F453 WrlExtraSet formWrlExtraSet stack-based overflow

Vulnerability summary

CVE-2026-3768 is a high (CVSS 9.0) vulnerability in tenda f453_firmware. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 63.9% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 08-03-2026
   PublishedVulnerability first disclosed.
2. 10-03-2026
   Last modifiedVulnerability information updated.

Description

A security vulnerability has been detected in Tenda F453 1.0.0.3. Affected by this vulnerability is the function formWrlExtraSet of the file /goform/WrlExtraSet. The manipulation of the argument GO leads to stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may 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).