CVE-2026-79911

CRITICAL 10.0

TOTOLINK N600R CGI cstecgi.cgi setSystemConfig stack-based overflow

CVSS Score

10.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121 CWE-119
Vendor	totolink
Product	n600r
Published	Aug 25, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

TOTOLINK / N600R

4.3.0cu.7647_B20210106

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/395061 vuldb.com: https://vuldb.com/vuln/395061/cti vuldb.com: https://vuldb.com/cve/CVE-2026-79911 vuldb.com: https://vuldb.com/submit/881258 github.com: https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.md totolink.net: https://www.totolink.net/

Credits

🔍 ST4R0002 (VulDB User)