THREATPORT/VULNERABILITY/CVE-2022-0547
CRITICAL SEVERITY

CVE-2022-0547

Openvpn vulnerability

CVSS
9.8
EPSS
3.5%
EPSS pct
88th
Exploited
No known
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 vendor
Openvpn
Affected product
Openvpn
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2022-03-18

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2022-0547

  • Confirm whether Openvpn Openvpn is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-0547.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-0547

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-0547 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2022-0547?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2022-0547.

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