Access Control Weakness in TOTOLINK T6 by TOTOLINK
CVE-2026-51670

9.8CRITICAL

Key Information:

Vendor

TOTOLINK
Status
TOTOLINK T6
Vendor
CVE Published:
31 August 2026

What is CVE-2026-51670?

An access control vulnerability in the getSlaveUpdate function of the TOTOLINK T6 firmware version 4.1.5cu.748_B20211015 allows unauthenticated attackers to execute crafted POST requests. This weakness enables unauthorized users to query the slave upgrade status, potentially compromising upgrade bookkeeping and overall security integrity of the firmware. The flaw underscores the importance of robust access control measures to safeguard devices from unauthorized manipulation.

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

.