CVE-2026-11528: Tenda AC18 Web Management getRebootStatus sub_45304 stack-based overflow

Vulnerability summary

CVE-2026-11528 is a high (CVSS 9.0) vulnerability in tenda ac18_firmware. EPSS estimates a 0.47% chance of exploitation in the next 30 days, higher than 39.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 08-06-2026
   PublishedVulnerability first disclosed.
2. 09-06-2026
   Last modifiedVulnerability information updated.

Description

A vulnerability was found in Tenda AC18 15.03.05.05. The affected element is the function sub_45304 of the file /goform/getRebootStatus of the component Web Management Interface. The manipulation of the argument callback results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been made public and could 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).