A vulnerability classified as critical was found in Tenda AC10U 15.03.06.49. Affected by this vulnerability is the function formSetFirewallCfg of the file /goform/SetFirewallCfg. The manipulation of the argument firewallEn leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-257455. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.