OpenVPN versions before 2.3.3 and 2.4.x before 2.4.4 are vulnerable to a buffer overflow vulnerability when key-method 1 is used, possibly resulting in code execution.
https://lists.debian.org/debian-lts-announce/2022/05/msg00002.html
http://www.securitytracker.com/id/1039470
http://www.securityfocus.com/bid/101153
https://community.openvpn.net/openvpn/wiki/CVE-2017-12166
Source: Mitre, NVD
Published: 2017-10-04
Updated: 2025-04-20
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.01127