CVE-2026-51734

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Incorrect access control in the informSlaveUpdate function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to trigger mesh slave update coordination via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

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