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.

Details CVE

Score CVSS v3.17.5

SeveriteHIGH

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/3/2022

Derniere modification11/3/2025

Sourcenvd

Observations honeypot0

Produits affectes

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)

Correlations IOC

Aucune correlation enregistree

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