Vulnerability · Published May 19, 2025 · Assigned by OpenVPN
CVE-2025-3908
Medium 6.2
In plain English
A medium-severity security flaw in OpenVPN 3 Linux from OpenVPN. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.2Medium
Exploit odds (30 days)0.2%top 87.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | openvpn3-client | 24.1+dfsg-1 | DEBIAN-CVE-2025-3908 |
| Debian:14 | openvpn3-client | 24.1+dfsg-1 | DEBIAN-CVE-2025-3908 |
| Ubuntu:25.10 | openvpn3-client | no fix listed | UBUNTU-CVE-2025-3908 |
| Ubuntu:26.04:LTS | openvpn3-client | no fix listed | UBUNTU-CVE-2025-3908 |
| Ubuntu:26.10 | openvpn3-client | no fix listed | UBUNTU-CVE-2025-3908 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| OpenVPN | OpenVPN 3 Linux | v20 – through v24 |
Weakness: CWE-59 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N