Is CVE-2026-79911 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-79911?

CVE-2026-79911 has a CVSS v3 severity of CRITICAL (10).

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CVE-2026-79911

Description

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.