CVE-2026-51611 Missing authorization in n/a
Unauthenticated attackers can force a reboot of TOTOLINK T6 routers by sending crafted MQTT messages, causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-51611?
CVE-2026-51611 is a critical missing authorization vulnerability in n/a, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-51611?
How do I fix CVE-2026-51611?
No fix has been published for CVE-2026-51611 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-51611 being exploited?
There is no known exploitation of CVE-2026-51611 in the wild and no public exploit code.
Sources
Also known as GHSA-g5j5-f582-85mw.