CVE-2022-0547
- State
- Published
- Severity
- 9.8 Critical
- Published
- Mar 18, 2022
- Updated
- Nov 3, 2025
- Reserved
- Feb 8, 2022
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-305 Authentication Bypass by Primary Weakness
Affected Products
| Product | Versions |
|---|---|
OpenVPNn/a |
|
References
- https://community.openvpn.net/openvpn/wiki/SecurityAnnouncements
- https://community.openvpn.net/openvpn/wiki/CVE-2022-0547
- https://openvpn.net/community-downloads/
- FEDORA-2022-7d46acce7cvendor-advisory
- FEDORA-2022-cb4c1146dcvendor-advisory
- [debian-lts-announce] 20220503 [SECURITY] [DLA 2992-1] openvpn security updatemailing-list
- https://lists.debian.org/debian-lts-announce/2025/03/msg00005.html
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