CVE-2026-51681

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Incorrect access control in the setRemoteCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to expose WAN-side administration via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

Published 2026-08-31. Last modified 2026-08-31.