CVE-2025-9087: Tenda AC20 Firmware

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A vulnerability has been found in Tenda AC20 16.03.08.12. This affects the function set_qosMib_list of the file /goform/SetNetControlList of the component SetNetControlList Endpoint. The manipulation of the argument list leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Tenda AC20 Firmware: version 16.03.08.12 only

Published 2025-08-16. Last modified 2026-06-17.