CVE-2026-51645: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the getPasswordCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain the administrative username via sending a crafted POST request to /cgi-bin/cstecgi.cgi.
Affected Software
1 affected component
TOTOLINK T6=4.1.5cu.748_B20211015
Event History
Aug 28, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Frequently Asked Questions
1
What does an attacker need to exploit this issue?
The attacker needs network access to the router's web interface and must be able to send a crafted POST request to /cgi-bin/cstecgi.cgi. No authentication is required.
2
What information can be exposed?
Successful exploitation exposes the administrative username. The provided information does not indicate that an administrative password or other configuration data is disclosed.
3
Which product version is identified as affected?
The affected version identified in the available information is TOTOLINK T6 4.1.5cu.748_B20211015.