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Vulnerabilities

Vulnerability · CVE-2026-22791

openCryptoki is a PKCS#11 library and tools for Linux and AIX.

Published Jan 13, 2026 · catalog updated Jan 13, 2026 · openCryptoki is a PKCS#11

Last checked Nov 6, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-22791. EPSS is 0.28%. Act only if a listed version of openCryptoki is a PKCS#11 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (openCryptoki is a PKCS#11).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.28%
Remediation
Advisory link
Affected products
vendor opencryptoki opencryptoki 3.25.0, ≤ 3.26.0

openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor opencryptoki opencryptoki 3.25.0, ≤ 3.26.03.25.0, ≤ 3.26.0

How to fix CVE-2026-22791

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-22791. EPSS is 0.28%. Act only if a listed version of openCryptoki is a PKCS#11 is installed.

Which versions are affected?

Compare what you have installed with opencryptoki opencryptoki 3.25.0, ≤ 3.26.0 3.25.0, ≤ 3.26.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.28%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jan 13, 2026 · EUVD

    Detected

    openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.

  2. Jan 13, 2026 · EUVD

    Updated

    openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a compressed EC public key and invoking C_WrapKey. This can lead to heap corruption, or denial-of-service.

Sources

  • CVE.orgVulnerability recordCVE-2026-22791

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-22791

    30-day exploitation probability 0.28%

    first.org
  • EUVDVulnerability recordEUVD-2026-2415

    openCryptoki is a PKCS#11 library and tools for Linux and AIX. In 3.25.0 and 3.26.0, there is a heap buffer overflow vulnerability in the CKM_ECDH_AES_KEY_WRAP implementation allows an attacker with local access to cause out-of-bounds writes in the host process by supplying a com

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 6, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 6, 2026
  • CVE.orgOct 30, 2026
  • EUVDOct 30, 2026