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HIGH

CVE-2026-51766

CVSS v3

7.5

HIGH

EPSS Score

0.6 %

exploit probability, as of 2026-09-28

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Description

Incorrect access control in the setDevReboot function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to reboot the local device and, on a master, fan out reboot commands to mesh slaves via sending a crafted MQTT message to the cs_broker component.

Technical details

Published
2026-09-01
Last Modified
2026-09-01

Frequently asked questions

What is CVE-2026-51766?

Incorrect access control in the setDevReboot function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to reboot the local device and, on a master, fan out reboot commands to mesh slaves via sending a crafted MQTT message to the cs_broker component.

Is CVE-2026-51766 actively exploited?

Active exploitation of CVE-2026-51766 has not been confirmed. Its EPSS score was 0.6% on 2026-09-28, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-51766?

CVE-2026-51766 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2026-51766 affecting your environment?

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