A vulnerability, which was classified as critical, was found in TOTOLINK A3600R 4.1.2cu.5182_B20201102. Affected is the function setUploadSetting of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument FileName leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-272604. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.