CVE-2026-51666

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Incorrect access control in the setWizardCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to reconfigure WAN, Wi-Fi, and device initialization state via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

Published 2026-08-31. Last modified 2026-09-01.