What is CVE-2026-51611?

CVE-2026-51611 is a critical-severity vulnerability in N/a, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-28.

How severe is CVE-2026-51611?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in N/a

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.

Published 2026-08-28 · last modified 2026-09-02.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.3th percentile), scored 2026-10-13.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.002

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

Frequently asked questions

What is CVE-2026-51611?: CVE-2026-51611 is a critical-severity vulnerability in N/a, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-08-28.
How severe is CVE-2026-51611?: Critical severity. CVSS v3 base score is 9.8 out of 10.