CVE-2025-12240 | TOTOLINK A3300R 17.0.0cu.557_B20221024 /cgi-bin/cstecgi.cgi setDmzCfg ip buffer overflow

A vulnerability classified as critical has been found in TOTOLINK A3300R 17.0.0cu.557_B20221024. This affects the function setDmzCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ip leads to buffer overflow.

This vulnerability is traded as CVE-2025-12240. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.