CVE-2026-51750: n/a
Description
Incorrect access control in the updatePriChannel function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to rescan and switch the primary mesh channel 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 updatePriChannel function of TOTOLINK T6 4.1.5cu.748_B20211015. An attacker without authentication can exploit this flaw by sending a specially crafted MQTT message to the cs_broker component, enabling them to rescan and change the primary mesh channel. The CVSS 3.1 base score is 9.8, indicating critical severity with network attack vector, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation allows an unauthenticated attacker to control the primary mesh channel configuration of the affected device. This can lead to disruption of network operations, potential denial of service, and compromise of network integrity and confidentiality.
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: 6a96d529acd9273b49c2e08a
Added to database: 09/01/2026, 13:37:45 UTC
Last enriched: 09/07/2026, 13:31:01 UTC
Last updated: 10/14/2026, 18:48:21 UTC
Views: 86
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