CVE-2025-14655: Tenda AC20 Firmware

High severity, CVSS 8.8. EPSS: 3.3% chance of exploitation in the next 30 days.

A security flaw has been discovered in Tenda AC20 16.03.08.12. The impacted element is the function formSetRebootTimer of the file /goform/SetSysAutoRebbotCfg of the component httpd. Performing a manipulation of the argument rebootTime results in stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Tenda AC20 Firmware: version 16.03.08.12 only

Published 2025-12-14. Last modified 2026-10-07.