CVE-2026-51744
Received Received - Intake

Incorrect Access Control in TOTOLINK T6 Firmware

Publication date: 2026-09-01

Last updated on: 2026-09-01

Assigner: MITRE

Description
Incorrect access control in the recv_mesh_info_sync function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to force mesh configuration synchronization from an attacker-controlled host via sending a crafted MQTT message to the cs_broker component.

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Meta Information

Published
2026-09-01
Last Modified
2026-09-01
Generated
2026-09-01
AI Q&A
2026-09-01
EPSS Evaluated
N/A
NVD
CVE-2026-51744
EUVD
EUVD-2026-69209

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
totolink t6 4.1.5cu.748_b20211015

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability is an incorrect access control issue in the recv_mesh_info_sync function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. It allows unauthenticated attackers to force mesh configuration synchronization from a host they control by sending a specially crafted MQTT message to the cs_broker component.

Impact Analysis

An attacker could exploit this to alter mesh network settings, potentially disrupting network operations or intercepting traffic. This may lead to unauthorized access to network resources or sensitive data transmitted over the mesh network.

Mitigation Strategies

Immediately update TOTOLINK T6 firmware to the latest version to patch the incorrect access control in recv_mesh_info_sync. Disable unnecessary MQTT services on the device if possible. Monitor network traffic for suspicious MQTT messages targeting the cs_broker component.

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