A vulnerability, which was classified as critical, has been found in TOTOLINK EX1200L 9.3.5u.6146_B20201023. Affected by this issue is the function loginauth of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument http_host leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-273260. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.