TOTOLINK A3600R cstecgi.cgi setUpgradeFW buffer overflow

A vulnerability, which was classified as critical, has been found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. This issue affects the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-272603. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.