6.2

CVE-2025-3908: openvpn openvpn 3 linux Link Following

CVSS: 6.2v3.1MediumAnalyzed
AliasesUBUNTU-CVE-2025-3908DEBIAN-CVE-2025-3908
Published 19-05-2025Last modified 20-05-2025
Open JSON

Vulnerability summary

CVE-2025-3908 is a medium (CVSS 6.2) Link Following vulnerability in openvpn openvpn 3 linux. EPSS estimates a 0.22% chance of exploitation in the next 30 days, higher than 11.4% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.2/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.22%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 19-05-2025
    PublishedVulnerability first disclosed.
  2. 20-05-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.22%

Chance of exploitation in the next 30 days

Percentile

11%

Versus all other CVEs

30-day change

+0.01 pp

From 0.21% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Openvpn2 products
Debian1 product
  • openvpn3-client< 24.1+dfsg-1
Ubuntu1 product
  • openvpn3-clientAll versions (No fix recorded)

3 vendors · 4 products

References

5 links