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Vulnerabilities / CVE-2022-0547

critical

CVE-2022-0547

OpenVPN 2.1 until v2.4.12 and v2.5.6 may enable authentication bypass ...

Published Modified CWE 305, 287
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium), Amazon (low).

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 and fixed versions

SourcePackageFixed in
alpine 3.12openvpn2.4.12-r0
alpine 3.13openvpn2.5.6-r0
alpine 3.14openvpn2.5.6-r0
alpine 3.15openvpn2.5.6-r0
alpine 3.16openvpn2.5.6-r0
alpine 3.17openvpn2.5.6-r0
alpine 3.18openvpn2.5.6-r0
alpine 3.19openvpn2.5.6-r0
alpine 3.20openvpn2.5.6-r0
alpine 3.21openvpn2.5.6-r0
alpine 3.22openvpn2.5.6-r0
alpine 3.23openvpn2.5.6-r0
Show all 36 entries from 34 sources
SourcePackageFixed in
alpine 3.12openvpn2.4.12-r0
alpine 3.13openvpn2.5.6-r0
alpine 3.14openvpn2.5.6-r0
alpine 3.15openvpn2.5.6-r0
alpine 3.16openvpn2.5.6-r0
alpine 3.17openvpn2.5.6-r0
alpine 3.18openvpn2.5.6-r0
alpine 3.19openvpn2.5.6-r0
alpine 3.20openvpn2.5.6-r0
alpine 3.21openvpn2.5.6-r0
alpine 3.22openvpn2.5.6-r0
alpine 3.23openvpn2.5.6-r0
alpine 3.24openvpn2.5.6-r0
alpine edgeopenvpn2.5.6-r0
amazon linux 1openvpn2.4.12-1.43.amzn1
amazon linux 1openvpn-debuginfo2.4.12-1.43.amzn1
amazon linux 1openvpn-devel2.4.12-1.43.amzn1
debian 10openvpnno fix listed
debian 11openvpn2.5.1-3+deb11u1
debian 12openvpn2.5.6-1
debian 13openvpn2.5.6-1
debian 14openvpn2.5.6-1
debian 9openvpn2.4.0-6+deb9u4
echoopenvpn2.5.6-1
ubuntu 14.04-ESMopenvpn2.3.2-7ubuntu3.2+esm1
ubuntu 16.04-ESMopenvpn2.3.10-1ubuntu2.2+esm1
ubuntu 18.04openvpn2.4.4-2ubuntu1.7
ubuntu 18.04-ESMopenvpn2.4.4-2ubuntu1.7
ubuntu 20.04openvpn2.4.7-1ubuntu2.20.04.4
ubuntu 20.04-ESMopenvpn2.4.7-1ubuntu2.20.04.4
ubuntu 21.10openvpn2.5.1-3ubuntu1.1
ubuntu 22.04openvpn2.5.5-1ubuntu3
ubuntu 22.10openvpn2.5.5-1ubuntu3
ubuntu 23.04openvpn2.5.5-1ubuntu3
ubuntu 23.10openvpn2.5.5-1ubuntu3
ubuntu 24.04openvpn2.5.5-1ubuntu3

References

All 10 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.