CVE-2021-3569

5.5 mediumEPSS 0.3%

Medium (5.5). EPSS 0.3% chance of exploitation in the next 30 days.

A stack corruption bug was found in libtpms in versions before 0.7.2 and before 0.8.0 while decrypting data using RSA. This flaw could result in a SIGBUS (bad memory access) and termination of swtpm. The highest threat from this vulnerability is to system availability.

Severity

CVSS 3.1

5.5 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 17% of CVEs (scores of 2026-10-31)
CWEs: CWE-787, CWE-120
Published: 2021-06-03
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

libtpms_project:libtpms
redhat:enterprise_linux

References

https://bugzilla.redhat.com/show_bug.cgi?id=1964358
https://bugzilla.redhat.com/show_bug.cgi?id=1964358

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