CVE-2026-51662: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the getCloudSrvCheckStatus function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain cloud firmware check status information 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 access does an attacker need to retrieve the cloud firmware check status?
No authentication is required. An attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi that invokes the getCloudSrvCheckStatus function.
2
Which device and firmware version are identified as affected?
The reported affected product is the TOTOLINK T6 running firmware version 4.1.5cu.748_B20211015.