CVE-2026-51611: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the startSlaveReboot function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to arbitrarily force a reboot via sending a crafted MQTT message.
Affected Software
1 affected component
TOTOLINK T6=4.1.5cu.748_B20211015
Event History
Aug 28, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Frequently Asked Questions
1
Who can exploit this issue?
An unauthenticated attacker can exploit it by sending a crafted MQTT message to the affected device. No prior login is required.
2
What is the impact of successful exploitation?
Successful exploitation allows an attacker to arbitrarily force the router to reboot, causing a denial of service.
3
Which firmware version is identified as affected?
The reported affected version is TOTOLINK T6 firmware 4.1.5cu.748_B20211015.