CVE-2026-51736: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the clearSyslog function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to erase system logs 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
Who can exploit this issue?
An unauthenticated attacker who can send a crafted POST request to the device's /cgi-bin/cstecgi.cgi endpoint can exploit it. The affected function is clearSyslog.
2
What is the impact of successful exploitation?
A successful attacker can erase the device's system logs. This can remove operational and security-relevant records that may be needed for investigation.
3
How can I determine whether a device is affected?
The reported affected product and firmware version are TOTOLINK T6 4.1.5cu.748_B20211015. Review the firmware version running on T6 devices and whether their web management endpoint is reachable by untrusted networks.