CVE-2026-6113 Totolink CVE debrief

Who should care

Network administrators and security teams responsible for Totolink A7100RU devices should assess exposure and verify if their devices are vulnerable. They should also implement compensating controls, monitor for potential exploitation attempts, and verify vendor remediation and apply patches when available. Additionally, they should review network configurations for potential weaknesses and implement additional security measures, such as firewall rules and

Why it matters

CVE-2026-6113 is a high-severity OS command injection vulnerability in Totolink A7100RU 7.4cu.2313_b20191024. Network administrators and security teams should assess exposure, implement compensating controls, and verify vendor remediation.

• Remote attackers may inject OS commands, potentially leading to system compromise.
• Successful exploitation could allow attackers to execute arbitrary commands.
• Defenders should verify if their devices are vulnerable and implement compensating controls.
• Vendor remediation and patches should be verified and applied when available.

Technical summary

The Totolink A7100RU 7.4cu.2313_b20191024 device is vulnerable to OS command injection in the setTtyServiceCfg function of /cgi-bin/cstecgi.cgi. The attack can be launched remotely, allowing attackers to execute arbitrary commands. The vulnerability has a high CVSS score of 8.9 and is considered a high-severity issue. Defenders should verify if their devices are vulnerable and implement compensating controls. The CVE record and NVD entry provide details on the OS command injection vulnerability in Totolink A7100RU 7.4cu.2313_b20191024.

Defensive priority

High priority for network administrators and security teams responsible for Totolink A7100RU devices

Recommended defensive actions

• Network administrators and security teams should assess exposure and verify if their Totolink A7100RU devices are vulnerable.
• Implement compensating controls, such as restricting access to the /cgi-bin/cstecgi.cgi interface.
• Monitor for potential exploitation attempts and track exceptions.
• Verify vendor remediation and apply patches when available.
• Perform vulnerability scanning to identify exposed systems.
• Review network configurations for potential weaknesses.
• Implement additional security measures, such as firewall rules and intrusion detection systems.

Evidence notes

The CVE record and NVD entry provide details on the OS command injection vulnerability in Totolink A7100RU 7.4cu.2313_b20191024. The vulnerability affects the setTtyServiceCfg function in /cgi-bin/cstecgi.cgi. The attack can be launched remotely.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.