Tenda AC15 addWifiMacFilter stack-based overflow

A vulnerability classified as critical has been found in Tenda AC15 15.03.05.18/15.03.20_multi. This affects the function addWifiMacFilter of the file /goform/addWifiMacFilter. The manipulation of the argument deviceId/deviceMac 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. The identifier VDB-257661 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.