CVE-2026-79911: Totolink n600r

Critical severity, CVSS 10.0. EPSS: 1.1% chance of exploitation in the next 30 days.

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106. The affected element is the function setSystemConfig of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument Hostname leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used.

Affected products

• Totolink n600r: version 4.3.0cu.7647_B20210106 only

Published 2026-08-25. Last modified 2026-08-27.