Directory Traversal in pfSense CE Snort Module Reveals File Existence
CVE-2025-34173 Published on September 9, 2025
Netgate pfSense CE Snort package v4.1.6_25 Directory Traversal Information Disclosure
In pfSense CE /usr/local/www/snort/snort_ip_reputation.php, the value of the iplist parameter is not sanitized of directory traversal-related characters/strings before being used to check if a file exists. While the contents of the file cannot be read, the server reveals whether a file exists, which allows an attacker to enumerate files on the target. The attacker must be authenticated with at least "WebCfg - Services: Snort package" permissions.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2025-34173 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2025-34173
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Affected Versions
Netgate pfSense CE Version 4.1.6_25 is affected by CVE-2025-34173Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.