CVE-2021-38576

HIGH

7.5

Description

A BIOS bug in firmware for a particular PC model leaves the Platform authorization value empty. This can be used to permanently brick the TPM in multiple ways, as well as to non-permanently DoS the system.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/3/2022

Last Modified11/3/2025

Sourcenvd

Honeypot Sightings0

Affected Products

tianocore:edk2

References

https://bugzilla.tianocore.org/show_bug.cgi?id=3499(infosec@edk2.groups.io)

https://bugzilla.tianocore.org/show_bug.cgi?id=3499(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.