CVE-2026-51740: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the killProcess function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to terminate critical services 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 31, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·08:17 PM
Description
Frequently Asked Questions
1
What access does an attacker need to exploit this issue?
No authentication is required. An attacker can exploit the issue by sending a crafted POST request to the device's /cgi-bin/cstecgi.cgi endpoint.
2
What is the practical impact of successful exploitation?
A successful attacker can terminate critical services through the killProcess function, which can disrupt the router's normal operation.
3
Which device version is identified as affected?
The affected version identified is TOTOLINK T6 4.1.5cu.748_B20211015.