CVE-2024-27903

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-07-08 · updated 2026-06-17
Weakness: CWE-283

Description

OpenVPN plug-ins on Windows with OpenVPN 2.6.9 and earlier could be loaded from any directory, which allows an attacker to load an arbitrary plug-in which can be used to interact with the privileged OpenVPN interactive service.

Affected products

OpenVPN: before 2.5.10; from 2.6.0 before 2.6.10 — fixed in 2.5.10, 2.6.10

How to fix

Upgrade to a fixed version: OpenVPN 2.5.10, 2.6.10. Check the vendor advisory for mitigations.

References

https://community.openvpn.net/openvpn/wiki/CVE-2024-27903
https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/
https://www.mail-archive.com/openvpn-users@lists.sourceforge.net/msg07534.html
https://community.openvpn.net/openvpn/wiki/CVE-2024-27903
https://openvpn.net/security-advisory/ovpnx-vulnerability-cve-2024-27903-cve-2024-27459-cve-2024-24974/
https://www.mail-archive.com/openvpn-users@lists.sourceforge.net/msg07534.html

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