CVEvulnerability

CVE-2021-38576

7.5 HIGH Published 2022-01-03 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-01-03
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
7.8 HIGH — AV:N/AC:L/Au:N/C:N/I:N/A:C

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.

Affected configurations

• tianocore edk2 201808 • tianocore edk2 201811 • tianocore edk2 201903 • tianocore edk2 201905 • tianocore edk2 201908 • tianocore edk2 201911 • tianocore edk2 202002 • tianocore edk2 202005 • tianocore edk2 202008 • tianocore edk2 202011 • tianocore edk2 202102 • tianocore edk2 202105

References