A vulnerability has been found in Tenda i22 1.0.0.3(4687) and classified as critical. Affected by this vulnerability is the function formApPortalWebAuth of the file /goform/apPortalAuth. The manipulation of the argument webUserName/webUserPassword leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.