Incorrect Access Control in TOTOLINK T6 by TOTOLINK
CVE-2026-51761

5.3MEDIUM

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
1 September 2026

What is CVE-2026-51761?

The vulnerability involves incorrect access control within the updateLanIp function of the TOTOLINK T6 device. This flaw enables unauthenticated attackers to manipulate the LAN address state by sending specially crafted MQTT messages to the cs_broker component, potentially leading to unauthorized network access and control. It is vital for users to secure their devices to prevent exploitation.

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:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.