A vulnerability, which was classified as critical, was found in Tenda i21 1.0.0.14(4656). Affected is the function formSetAutoPing. The manipulation of the argument ping1/ping2 leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. VDB-263082 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
https://vuldb.com/?submit.323602
https://vuldb.com/?ctiid.263082
https://github.com/abcdefg-png/IoT-vulnerable/blob/main/Tenda/i/i21/formSetAutoPing.md