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CVE-2026-79911

10.0 · CRITICAL

A security vulnerability has been detected in TOTOLINK N600R 4.3.0cu.7647_B20210106.

Published Aug 25, 2026CWE-119EPSS 1.10%

Overview

CVE-2026-79911 is a critical-severity vulnerability. It was published on August 25, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/TOTOLINK_N600R_cstecgi_strcpy_sprintf_Multi_Function_Stack_Overflow.mdRefvuldb.com/cve/CVE-2026-79911Refvuldb.com/submit/881258Refvuldb.com/vuln/395061Refvuldb.com/vuln/395061/ctiRefwww.totolink.net/

How CyberStrike helps

Frequently asked questions

What is CVE-2026-79911?

CVE-2026-79911 is a critical-severity vulnerability. It was published on August 25, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2026-79911?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-79911?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-79911?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-79911 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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