CVE-2026-51668

Incorrect access control in the setLanguageCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to modify language configuration via sending a crafted POST request to /cgi-bin/cstecgi.cgi.

• Published Aug 31, 2026
• CVSS 7.5 high
• 0.5% chance of exploitation in the next 30 days (EPSS)

CVE-2026-51668 at the National Vulnerability Database