Access Control Flaw in TOTOLINK Router Firmware
CVE-2026-51672

9.1CRITICAL

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
31 August 2026

What is CVE-2026-51672?

The TOTOLINK T6 firmware contains an access control vulnerability in the getRoamingCfg function. This flaw allows unauthenticated attackers to exploit the system by sending a specially crafted POST request to the endpoint /cgi-bin/cstecgi.cgi. As a result, attackers can gain access to sensitive information such as the roaming enablement flag, potentially leading to unauthorized changes in network settings and compromised security.

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:
9.1
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

.