CVE-2026-51748: TOTOLINK T6 vulnerability
Published Sep 1, 2026
·Updated
Incorrect access control in the sendStaticInfoToMaster function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to update stored slave inventory records via sending a crafted MQTT message to the csbroker component.
Affected Software
1 affected component
TOTOLINK T6=4.1.5cu.748_B20211015
Event History
Sep 1, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Frequently Asked Questions
1
What access does an attacker need to exploit this issue?
The attacker does not need to authenticate. Exploitation requires sending a crafted MQTT message to the cs_broker component.
2
What can an attacker change?
An attacker can update stored slave inventory records through the affected sendStaticInfoToMaster function.
3
Which product version is identified as affected?
The reported affected version is TOTOLINK T6 4.1.5cu.748_B20211015.