Is CVE-2022-0547 in the CISA KEV catalog?

No. CVE-2022-0547 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-0547?

CVE-2022-0547 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2022-0547?

CVE-2022-0547 has an EPSS score of 3.52% (88th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-0547?

Upgrade openvpn on debian 11 to 2.5.1-3+deb11u1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2022-0547

CRITICALEPSS 88th pctl

9.8

CVSS v3

NVD

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.

CWE-305 CWE-287Improper Authentication

How to fix

Remediation Available

openvpnDebian

Fixed in:2.5.1-3+deb11u1CVE-2022-0547

Fixed in:2.5.6-1CVE-2022-0547

openvpnUbuntu

Fixed in:2.3.2-7ubuntu3.2+esm1USN-6850-1

Fixed in:2.3.10-1ubuntu2.2+esm1USN-6850-1

Fixed in:2.4.4-2ubuntu1.7USN-5347-1

Fixed in:2.4.7-1ubuntu2.20.04.4USN-5347-1

OpenVPNWindows application

Affected:2.5.0 2.5.6Fixed in:2.5.6OpenVPN, Inc.

Affected:2.1.0 2.4.12Fixed in:2.4.12OpenVPN, Inc.

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

3.52%probability of exploitation in 30 days

88thpercentile

Elevated risk: more likely to be exploited than 88% of all known CVEs.

References

Patch1

openvpn.net

Vendor Advisory2

Third-Party Advisory1

lists.debian.org

Other references3

Embed a live status badge for CVE-2022-0547

Markdown

[![CVE-2022-0547](https://tridentstack.com/cve/badge/CVE-2022-0547.svg)](https://tridentstack.com/cve/CVE-2022-0547)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-0547"><img src="https://tridentstack.com/cve/badge/CVE-2022-0547.svg" alt="CVE-2022-0547"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-11-03.