CVE-2026-51639: TOTOLINK T6 vulnerability
Published Aug 28, 2026
·Updated
Incorrect access control in the getApWiFiSchCfg function of TOTOLINK T6 4.1.5cu.748B20211015 allows unauthenticated attackers to obtain AP-specific Wi-Fi scheduling rules 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
What access does an attacker need to retrieve the Wi-Fi scheduling rules?
The issue can be exploited without authentication by sending a crafted POST request to /cgi-bin/cstecgi.cgi. The available information does not state whether network-local access is required.
2
What information can be exposed through this issue?
An attacker can obtain AP-specific Wi-Fi scheduling rules from the affected device.
3
Which firmware version is identified as affected?
The affected version identified is TOTOLINK T6 firmware 4.1.5cu.748_B20211015.