CVE-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 entity may not allocate sufficient length for the buffer to store the deserialized value.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

3.5% chance of exploitation in the next 30 days; higher than 89% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2020-12-16

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• oracle:communications_cloud_native_core_policy
• p11-kit_project:p11-kit

References

• https://github.com/p11-glue/p11-kit/releases
• https://github.com/p11-glue/p11-kit/security/advisories/GHSA-5j67-fw89-fp6x
• https://www.debian.org/security/2021/dsa-4822
• https://www.oracle.com/security-alerts/cpuapr2022.html
• https://github.com/p11-glue/p11-kit/releases

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