CVE-2026-51735: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the showSyslog function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to retrieve recent 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 can exploit it, so no valid router login is required. The attacker must be able to send a crafted POST request to the device's /cgi-bin/cstecgi.cgi endpoint.
2
What information could be exposed?
The issue allows retrieval of recent system logs through the showSyslog function. The provided information does not specify the exact log contents.
3
How can I determine whether a device is affected?
The identified affected product and firmware version is TOTOLINK T6 4.1.5cu.748_B20211015. A device running that version should be treated as affected.