CVE-2026-51674: Critical severity TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the setScheduleCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to configure forced reboot tasks 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·02:17 PM
DescriptionSeverityWeakness
Frequently Asked Questions
1
What access does an attacker need to exploit this issue?
An attacker does not need to authenticate. Exploitation consists of sending a crafted POST request to the device's /cgi-bin/cstecgi.cgi endpoint.
2
What could an attacker change through this vulnerability?
An attacker can configure forced reboot tasks through the setScheduleCfg function. This could allow unauthorized scheduling of device reboots.
3
Which device version is identified as affected?
The affected product identified is the TOTOLINK T6 running firmware version 4.1.5cu.748_B20211015.