Incorrect access control in the getSysStatusCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to obtain sensitive… (CVE-2026-51617)
Description
An incorrect access control vulnerability exists in the getSysStatusCfg function of TOTOLINK T6 firmware version 4.1.5cu.748_B20211015. This flaw allows unauthenticated attackers to send crafted POST requests to /cgi-bin/cstecgi.cgi and obtain sensitive device information including operation mode, firmware version, serial number, WAN/LAN IP addresses, WiFi SSID, encryption keys, and connected client statistics.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-51617 is an access control vulnerability in the getSysStatusCfg function of TOTOLINK T6 firmware 4.1.5cu.748_B20211015. Due to improper access restrictions, unauthenticated attackers can send specially crafted POST requests to the endpoint /cgi-bin/cstecgi.cgi to retrieve sensitive configuration and status information from the device. This includes critical details such as encryption keys and network configuration parameters.
Potential Impact
The vulnerability allows unauthorized disclosure of sensitive device information without authentication. Exposure of encryption keys and network configuration details can facilitate further attacks or unauthorized network access. However, there is no indication of remote code execution or direct device takeover from the provided data.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the device management interface from untrusted networks and monitor for suspicious POST requests to /cgi-bin/cstecgi.cgi.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-4j9g-3r37-7pj6
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-51617"]
Threat ID: 6a92f7fbacd9273b49e8add5
Added to database: 08/29/2026, 15:17:15 UTC
Last enriched: 09/09/2026, 19:22:50 UTC
Last updated: 10/12/2026, 06:48:17 UTC
Views: 50
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