CVE-2026-79911

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.

Score

CVSS 4.0 10.0 Critical

Status

Deferred - cna@vuldb.com

Published

2026-08-25

Last modified

2026-08-27

Weaknesses

CWE-119, CWE-121

Affected products

• N600r Firmware (Totolink)

References

• https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy…
• https://vuldb.com/cve/CVE-2026-79911
• https://vuldb.com/submit/881258
• https://vuldb.com/vuln/395061
• https://vuldb.com/vuln/395061/cti
• https://www.totolink.net/