Cyber Resilience

CVE-2021-38576

High

Published: 03 January 2022

Published
03 January 2022
Modified
03 November 2025
KEV Added
—
Patch
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CVSS Score v3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0026 49.3th percentile
Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-38576 is a high-severity an unspecified weakness vulnerability in Tianocore Edk2. Its CVSS base score is 7.5 (High).

Operationally, ranked at the 49.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

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.

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

tianocore
edk2
201808, 201811, 201903, 201905, 201908

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References