CVE-2026-51659: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the getUrlFilterRules function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain DMZ configuration 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 can exploit this issue?
An unauthenticated attacker who can send a crafted POST request to the router's /cgi-bin/cstecgi.cgi endpoint can exploit it. The issue affects the getUrlFilterRules function in TOTOLINK T6 firmware version 4.1.5cu.748_B20211015.
2
What information can be exposed?
Successful exploitation allows an attacker to obtain DMZ configuration information from the affected device.