Access Control Flaw in TOTOLINK T6 Allows Unauthorized Access
CVE-2026-51744

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
1 September 2026

What is CVE-2026-51744?

An access control vulnerability in the recv_mesh_info_sync function of the TOTOLINK T6 device allows unauthenticated users to manipulate mesh configuration. By sending a specially crafted MQTT message to the cs_broker component, attackers can exploit this flaw to enforce synchronization of the mesh configuration, posing significant security risks. This vulnerability highlights the importance of ensuring robust access control mechanisms to prevent unauthorized modifications and maintain the integrity of network configurations.

References

https://www.totolink.net/home/menu/detail/menu_listtpl/do...
https://www.totolink.net/
https://github.com/DarkBoulder/CVE-Vendor-Coordination/bl...

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.