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Vulnerabilities

Vulnerability · CVE-2020-29363

An issue was discovered in p11-kit 0.23.6 through 0.23.21.

Published Dec 16, 2020 · catalog updated Oct 14, 2026 · p11-kit project

Check if you run it

No confirmed exploitation is on record for CVE-2020-29363. EPSS is 3.53%. Act only if a listed version of p11-kit project is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
3.53%
Remediation
Advisory link
Affected products
cpe debian/debian linux · cpe oracle/communications cloud native core policy · cpe p11-kit project/p11-kit

An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

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.

  • cpe debian/debian linux10.0
  • cpe oracle/communications cloud native core policy1.14.0
  • cpe p11-kit project/p11-kitversion unspecified

How to fix CVE-2020-29363

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-2020-29363. EPSS is 3.53%. Act only if a listed version of p11-kit project is installed.

Which versions are affected?

Compare what you have installed with debian/debian linux 10.0; oracle/communications cloud native core policy 1.14.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-787: Out-of-bounds Write. EPSS 3.53%. 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. Dec 16, 2020 · NIST NVD

    Detected

    An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

  2. Oct 14, 2026 · NIST NVD

    Updated

    An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving entity may not allocate sufficient length for the buffer to store the deserialized value.

Sources

  • CVE.orgVulnerability recordCVE-2020-29363

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-29363

    30-day exploitation probability 3.5%

    first.org
  • NIST NVDVulnerability recordCVE-2020-29363

    An issue was discovered in p11-kit 0.23.6 through 0.23.21. A heap-based buffer overflow has been discovered in the RPC protocol used by p11-kit server/remote commands and the client library. When the remote entity supplies a serialized byte array in a CK_ATTRIBUTE, the receiving

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.