A vulnerability, which was classified as critical, was found in Tenda i21 1.0.0.14(4656). This affects the function formQosManageDouble_auto. The manipulation of the argument ssidIndex leads to stack-based buffer overflow. It is possible to initiate the attack remotely. The identifier VDB-262137 was assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
https://vuldb.com/?submit.319831
https://vuldb.com/?ctiid.262137
https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formQosManageDouble_user.md