CVE-2026-51700: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the setWiFiAdvancedCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to degrade wireless behavior 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·04:18 PM
Description
Frequently Asked Questions
1
What access does an attacker need to exploit this issue?
No authentication is required. An attacker can send a crafted POST request to the affected CGI endpoint.
2
What is the practical impact of exploitation?
An attacker can degrade wireless behavior by abusing the setWiFiAdvancedCfg function.
3
How can I determine whether a device is potentially affected?
The affected product and firmware identified in the available data are TOTOLINK T6 running 4.1.5cu.748_B20211015. The vulnerable request target is /cgi-bin/cstecgi.cgi.