Access Control Flaw in TOTOLINK T6 Router
CVE-2026-51752

5.3MEDIUM

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
1 September 2026

What is CVE-2026-51752?

An access control vulnerability exists in the staticInfoSend function of the TOTOLINK T6 router, specifically in version 4.1.5cu.748_B20211015. This flaw enables unauthenticated attackers to exploit the MQTT messaging protocol, allowing them to send specially crafted messages to the cs_broker component. Such exploitation facilitates unauthorized access to sensitive static information being reported to the designated master, posing a significant risk to the security of the affected device and the network it operates within.

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:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.