CVE-2026-51659: High severity 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
Data Sourced
via NVD·08:18 PM
DescriptionSeverityWeakness
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.