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.
History

Mon, 03 Nov 2025 21:30:00 +0000

Type Values Removed Values Added
References

Wed, 23 Apr 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: OpenVPN

Published: 2022-03-18T18:00:20.000Z

Updated: 2025-11-03T20:34:30.191Z

Reserved: 2022-02-08T00:00:00.000Z

Link: CVE-2022-0547

cve-icon Vulnrichment

Updated: 2025-11-03T20:34:30.191Z

cve-icon NVD

Status : Modified

Published: 2022-03-18T18:15:12.017

Modified: 2025-11-03T21:15:49.843

Link: CVE-2022-0547

cve-icon Redhat

No data.