CVE-2022-0547

CRITICAL9.8EPSS 0.46%

openvpn - security update

Published: 3/18/2022Modified: 4/28/2026

Description

OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass in external authentication plug-ins when more than one of them makes use of deferred authentication replies, which allows an external user to be granted access with only partially correct credentials.

Affected packages (3)

Alpine/openvpnfrom 0, < 2.4.12-r0
Debian/openvpnfrom 0, < 2.5.1-3+deb11u1
Debian/openvpnfrom 0, < 2.5.1-3+deb11u1

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	CRITICAL9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (2)

ADVISORYhttps://security.alpinelinux.org/vuln/CVE-2022-0547
ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-0547