A vulnerability was found in Tenda AC8 up to 16.03.50.11. It has been rated as critical. This vulnerability affects the function doSystemCmd of the file /goform/SysToolChangePwd of the component HTTP Endpoint. This manipulation of the argument local_2c causes stack-based buffer overflow.

This vulnerability is handled as CVE-2026-4254. The attack can be initiated remotely. Additionally, an exploit exists.