CVE-2026-51652: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the getUPnPCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain UPnP enablement and parsed port-mapping 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
Who is exposed to this issue?
TOTOLINK T6 devices running firmware 4.1.5cu.748_B20211015 are affected. An attacker does not need authentication to retrieve the disclosed information.
2
What access does an attacker need?
The attacker needs the ability to send a crafted POST request to the device's /cgi-bin/cstecgi.cgi endpoint. The issue can disclose whether UPnP is enabled and parsed port-mapping information.