CVE-2021-3623

6.1 mediumEPSS 0.3%

Medium (6.1). EPSS 0.3% chance of exploitation in the next 30 days.

A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

Severity

CVSS 3.1

6.1 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-787
Published: 2022-03-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fedoraproject:fedora
libtpms_project:libtpms
redhat:enterprise_linux

References

https://bugzilla.redhat.com/show_bug.cgi?id=1976806
https://github.com/stefanberger/libtpms/commit/2e6173c
https://github.com/stefanberger/libtpms/commit/2f30d62
https://github.com/stefanberger/libtpms/commit/7981d9a
https://github.com/stefanberger/libtpms/pull/223

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