A vulnerability classified as critical was found in TOTOLINK N600R 4.3.0cu.7866_B20220506. This vulnerability affects the function sub_4159F8 of the file /web_cste/cgi-bin/cstecgi.cgi. Executing manipulation can lead to command injection.

This vulnerability is handled as CVE-2025-9935. The attack can be executed remotely. Additionally, an exploit exists.