Access Control Flaw in TOTOLINK Router Product
CVE-2026-51762

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
1 September 2026

What is CVE-2026-51762?

A vulnerability exists in TOTOLINK T6 routers due to incorrect access control in the meshInfoKick function. This flaw allows unauthenticated attackers to exploit the cs_broker component by sending specially crafted MQTT messages. Successful exploitation enables attackers to manipulate and clear mesh state information, leading to unwanted changes in mesh metadata and disrupting network operations.

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

.