CVE-2026-51730: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the delWiFiAclRules function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to remove Wi-Fi ACL rules 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
Frequently Asked Questions
1
Who is exposed to this issue?
Devices identified as TOTOLINK T6 running firmware 4.1.5cu.748_B20211015 are exposed if an attacker can send requests to the device's web management CGI endpoint.
2
What does an attacker need to exploit it?
The attacker does not need authentication. Exploitation requires sending a crafted POST request to /cgi-bin/cstecgi.cgi that reaches the delWiFiAclRules function.
3
What is the impact of successful exploitation?
An attacker can remove Wi-Fi ACL rules. This can invalidate access restrictions implemented through the affected device's Wi-Fi ACL configuration.