CVE-2026-51667: TOTOLINK T6 vulnerability
Published Aug 31, 2026
·Updated
Incorrect access control in the getWiFiIpMacTable function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain Wi-Fi client MAC-to-IP mappings 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 NVD·01:18 PM
Data Sourced
via NVD·01:18 PM
Description
Frequently Asked Questions
1
What access does an attacker need to retrieve the Wi-Fi client mappings?
No authentication is required. An attacker can send a crafted POST request to /cgi-bin/cstecgi.cgi to invoke the affected function.
2
What information can be exposed?
The issue exposes Wi-Fi client MAC-to-IP mappings, allowing an unauthenticated requester to associate connected wireless clients with their assigned IP addresses.
3
Which device version is identified as affected?
The reported affected product is the TOTOLINK T6 running firmware version 4.1.5cu.748_B20211015.