CVE-2025-9570 Overview
CVE-2025-9570 is a relative path traversal vulnerability [CWE-23] in the eHRD CTMS application developed by Sunnet. The flaw allows authenticated remote attackers holding administrator privileges to download arbitrary files from the underlying server by manipulating file path parameters. Successful exploitation exposes configuration files, application source, credentials, and other sensitive data on the host filesystem.
The issue was published to NVD on September 1, 2025, and tracked by TW-CERT through a dedicated security advisory. The vulnerability affects the eHRD CTMS product and is scored against the CVSS 4.0 metric framework.
Critical Impact
Authenticated administrators can read any file accessible to the web application process, including system configuration and credential material.
Affected Products
- Sunnet eHRD CTMS (all versions prior to vendor remediation)
- Component identifier: sun.net:ehrd_ctms
- CPE: cpe:2.3:a:sun.net:ehrd_ctms:-:*:*:*:*:*:*:*
Discovery Timeline
- 2025-09-01 - CVE-2025-9570 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-9570
Vulnerability Analysis
The eHRD CTMS platform exposes a file download function that accepts a user-supplied path parameter. The application fails to canonicalize the path or restrict it to an approved base directory. An authenticated administrator can submit sequences such as ../ to traverse outside the intended download directory and reach arbitrary locations on the host filesystem.
Because the endpoint requires administrator authentication, the attack surface is limited to privileged accounts, compromised sessions, or scenarios involving credential theft. The vulnerability is network-reachable and does not require user interaction once credentials are available. Confidentiality impact is high; integrity and availability are not affected.
Root Cause
The root cause is improper limitation of a pathname to a restricted directory, categorized as [CWE-23] Relative Path Traversal. The application concatenates attacker-controlled input into a filesystem path without normalizing the result or rejecting traversal sequences.
Attack Vector
An attacker authenticates to the eHRD CTMS management interface with administrator credentials. The attacker then issues a crafted request to the vulnerable download endpoint, supplying a relative path that references files outside the application directory. The server resolves the path and returns the file contents in the HTTP response.
For technical details, see the TW-CERT Security Advisory and the TW-CERT Incident Report.
Detection Methods for CVE-2025-9570
Indicators of Compromise
- HTTP requests to eHRD CTMS file download endpoints containing ../, ..%2f, or encoded traversal sequences in path parameters
- Successful HTTP 200 responses returning content with non-application MIME types or system file signatures
- Administrator account activity originating from unexpected source IP addresses or at atypical hours
Detection Strategies
- Inspect web server and application logs for path parameters containing traversal patterns targeting download handlers
- Correlate administrator session activity with file download volume and file types requested
- Alert on responses that return configuration file extensions such as .conf, .ini, .properties, or operating system files like /etc/passwd
Monitoring Recommendations
- Enable verbose access logging on the eHRD CTMS web tier and forward logs to a centralized SIEM for retention and analysis
- Monitor administrator authentication events and flag logins from new geolocations or user agents
- Baseline normal download endpoint usage and alert on deviations in request rate, parameter length, or response size
How to Mitigate CVE-2025-9570
Immediate Actions Required
- Apply the vendor-supplied patch for eHRD CTMS as referenced in the TW-CERT advisory
- Rotate credentials and session tokens for all administrator accounts after patching
- Review historical access logs for traversal patterns to identify prior exploitation attempts
- Restrict administrative interface access to trusted management networks using firewall or VPN controls
Patch Information
Sunnet has coordinated disclosure through TW-CERT. Administrators should contact Sunnet directly or consult the TW-CERT Security Advisory for the fixed version and upgrade instructions. Apply the vendor remediation before implementing compensating controls as a long-term solution.
Workarounds
- Enforce multi-factor authentication on all administrator accounts to reduce the likelihood of credential-based abuse
- Place a web application firewall in front of eHRD CTMS and block requests containing path traversal signatures such as ../, ..\, and their URL-encoded variants
- Limit administrator account provisioning and apply least-privilege principles to reduce the number of accounts capable of triggering the vulnerability
- Isolate the eHRD CTMS host and restrict the service account's filesystem read permissions to the minimum directories required for operation
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.