Totolink - Cp450 - CRITICAL - CVE-2026-85031. A buffer overflow vulnerability exists in the TOTOLINK CP450 router running version 4.1.0. This issue is caused by a manipulation of the 'topicurl' argument in the /cgi-bin/cstecgi.cgi file, leading to the potential for remote exploitation. If successfully exploited, an attacker could execute arbitrary code on the device, making it crucial for users to promptly apply available security updates to mitigate this risk.