Detect Gladinet CentreStack/Triofox Unauthorized File/Directory Access (CVE-2025-11371) in Elastic Security
Detects exploitation of CVE-2025-11371, a CWE-552 vulnerability in Gladinet CentreStack and Triofox where files or directories are accessible to external parties without proper authorization. This CISA KEV-listed vulnerability allows unauthenticated or unauthorized actors to access sensitive files and directories exposed by the affected file-sharing platform.
MITRE ATT&CK
- Tactic
- Collection Exfiltration
Elastic Detection Query
sequence by source.ip with maxspan=10m
[network where event.type == "connection" and destination.port in (80, 443, 8080, 8443)
and not source.ip : ("10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "127.0.0.1")]
[http where http.response.status_code in (200, 206, 301, 302)
and (
http.request.uri.path : ("/storage/*", "/files/*", "/share/*", "/download/*", "/content/*")
or http.request.uri.path : ("*../*", "*%2e%2e*", "*%252e%252e*")
or http.request.uri.path : ("*/web.config*", "*/appsettings*", "*/.ssh/*", "*/etc/passwd*")
)
]EQL sequence detection for external sources establishing HTTP connections to CentreStack/Triofox and subsequently accessing file storage endpoints or attempting path traversal.
Data Sources
Required Tables
False Positives & Tuning
- Authorized external users with legitimate file access needs
- API integrations from trusted external services accessing file endpoints
- Vulnerability scanners running authorized assessments
- Load balancer health checks against storage endpoints
Other platforms for CVE-2025-11371
Testing Methodology
Validate this detection against 3 adversary techniques from Atomic Red Team. Each test below lists the behaviour to exercise and the telemetry you should expect to see. Executable commands and cleanup steps are available with Pro.
- Test 1Unauthenticated File Enumeration via CentreStack Storage Endpoint
Expected signal: IIS access logs will show HTTP GET requests to /storage/, /files/, /share/ etc. from the test IP with no authentication headers. Responses of 200/206 indicate the vulnerability is present.
- Test 2Path Traversal Attempt Against CentreStack File Server
Expected signal: Web server logs will contain requests with URL-encoded traversal sequences. Windows Security Event Log Event ID 4663 may fire if file auditing is enabled and a real file is accessed.
- Test 3Bulk File Download Simulation from External IP
Expected signal: IIS logs will show high-volume sequential GET requests from a single external IP with large response sizes (sc-bytes). Network flow data will show sustained outbound data transfer to the test IP.
Unlock Pro Content
Get the full detection package for CVE-2025-11371 including response playbook, investigation guide, and atomic red team tests.