CVE-2022-0547 (GCVE-0-2022-0547)

Vulnerability from cvelistv5 – Published: 2022-03-18 18:00 – Updated: 2025-11-03 20:34
VLAI?
Summary
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.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-305 - - Authentication Bypass by Primary Weakness
Assigner
References
Impacted products
Vendor Product Version
n/a OpenVPN Affected: version 2.1 until version 2.4.12 and 2.5.6.
Show details on NVD website
To clipboard 

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    "vulnrichment": {
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      "cveMetadata": "{\"cveId\": \"CVE-2022-0547\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-03T20:34:30.191Z\", \"dateReserved\": \"2022-02-08T00:00:00.000Z\", \"assignerOrgId\": \"36a55730-e66d-4d39-8ca6-3c3b3017965e\", \"datePublished\": \"2022-03-18T18:00:20.000Z\", \"assignerShortName\": \"OpenVPN\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.