CVE-2026-51742: TOTOLINK T6 vulnerability
Published Sep 1, 2026
·Updated
Incorrect access control in the discoverWan function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to trigger WAN discovery logic 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
Sep 1, 2026
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·01:19 PM
Description
Frequently Asked Questions
1
Who can exploit this issue?
An unauthenticated attacker can trigger the affected WAN discovery logic. The description does not state that prior login, credentials, or other privileges are required.
2
What request path is involved?
The affected functionality is reachable through a crafted POST request to /cgi-bin/cstecgi.cgi.
3
Which product version is identified as affected?
The reported affected version is TOTOLINK T6 4.1.5cu.748_B20211015.