PT-2026-84204 · Totolink · Totolink T6

CVE-2026-51743

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Published

2026-09-01

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Updated

2026-09-01

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Name of the Vulnerable Software and Affected Versions TOTOLINK T6 version 4.1.5cu.748 B20211015
Description Incorrect access control in the guest wifi sync() function allows unauthenticated attackers to disable guest virtual AP interfaces. This is achieved by sending a crafted MQTT message to the cs broker component. MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol used for communication between devices.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Access Control

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Weakness Enumeration

Related Identifiers

CVE-2026-51743

Affected Products

Totolink T6