CVE-2025-15356: Tenda AC20 Firmware

High severity, CVSS 8.8. EPSS: 4% chance of exploitation in the next 30 days.

A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file /goform/PowerSaveSet. The manipulation of the argument powerSavingEn/time/powerSaveDelay/ledCloseType leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Tenda AC20 Firmware: up to and including 16.03.08.12

Published 2025-12-30. Last modified 2026-06-17.