Description

Incorrect access control in the startSlaveReboot function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to arbitrarily force a reboot via sending a crafted MQTT message.

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EPSS — Exploit Prediction

0.0044

Probability of exploitation

0.38%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

References

Other References

https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/20260416_T6_vuln_report.pdf https://github.com/DarkBoulder/CVE-Vendor-Coordination/blob/main/TOTOLINK/20260424_T6_confirm.pdf https://github.com/ShengWu00/CVE-Vendor-Coordination/blob/main/TOTOLINK/README.md https://www.totolink.net/ https://www.totolink.net/home/menu/detail/menu_listtpl/download/id/190/ids/36.html

Frequently Asked Questions

What is CVE-2026-51611? +

Incorrect access control in the startSlaveReboot function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to arbitrarily force a reboot via sending a crafted MQTT message.

How do I check if I'm vulnerable to CVE-2026-51611? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.