Access Control Flaw in TOTOLINK Device Impacts Unauthenticated Users
CVE-2026-51767

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
1 September 2026

What is CVE-2026-51767?

An incorrect access control vulnerability exists in the recvClearPairCfg function of the TOTOLINK T6. This flaw enables unauthenticated attackers to manipulate the pairing state of the device and reboot it by sending malicious MQTT messages to the cs_broker component, posing significant security risks to users. Due to this vulnerability, unauthorized parties may gain control over device functionalities, potentially leading to further 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:
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

.