CVE-2026-51747: n/a
Description
Incorrect access control in the keepAlive function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to emit indirect mesh heartbeat information toward the master via sending a crafted MQTT message to the cs_broker component.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper access control in the keepAlive function of TOTOLINK T6 4.1.5cu.748_B20211015. An unauthenticated attacker can exploit this by sending a specially crafted MQTT message to the cs_broker component, which results in the emission of indirect mesh heartbeat information toward the master device. The flaw is classified under CWE-284 (Improper Access Control) and carries a CVSS 3.1 base score of 9.8, indicating critical severity with network attack vector, no privileges or user interaction required, and full impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an unauthenticated attacker to manipulate mesh network heartbeat information, potentially disrupting network operations and compromising the confidentiality, integrity, and availability of the mesh network communications.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary mitigation has been documented at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-08T00:00:00.000Z
- State
- PUBLISHED
Threat ID: 6a96d1a2acd9273b49bee4fe
Added to database: 09/01/2026, 13:22:42 UTC
Last enriched: 09/07/2026, 12:58:15 UTC
Last updated: 10/14/2026, 18:48:21 UTC
Views: 93
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