CVE-2022-34831Network attack vector

Unvalidated certificate issuance via ACME identifier mismatch

Published Sep 14, 2022 · Updated Aug 3, 2024

Certificate validation bypass in Keyfactor PrimeKey EJBCA before 7.9.0 allows remote attackers to obtain certificates for unvalidated DNS names. The ACME finalize endpoint accepts a CSR containing additional dnsNames after challenges validate only the identifiers originally placed in the order. An attacker must complete validation for at least one ordered identifier, after which the extra CSR names are issued even when the certificate profile forbids CSR subject-DN override.

CVSS severity9.8
Critical
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Certificate validation bypass in Keyfactor PrimeKey EJBCA before 7.9.0 allows remote attackers to obtain certificates for unvalidated DNS names. The ACME finalize endpoint accepts a CSR containing additional dnsNames after challenges validate only the identifiers originally placed in the order. An attacker must complete validation for at least one ordered identifier, after which the extra CSR names are issued even when the certificate profile forbids CSR subject-DN override.

The record

CVE
CVE-2022-34831
Published
Sep 14, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-295, T1649
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1649Steal or Forge Authentication Certificates

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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