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CVE-2022-0547

9.8
CRITICALCVSS v3.1 Base Score
0.46%
LOW RiskEPSS (65th percentile)

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.

Published: 3/18/2022
Modified: 11/3/2025
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Vulnerability Summary

CVSS v3 Score

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2 Score

7.5

AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Score (Exploitation Probability)

0.46%LOW Exploitation Risk
65th percentile

This vulnerability has a 0.46% probability of being exploited in the next 30 days, ranking higher than 65% of all scored CVEs.

CWE Classification

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