CVE-2021-38576

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.

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.26%

Third-Party Advisory tianocore.org

Affected: n/a EDK II

References

Link	Tags
https://bugzilla.tianocore.org/show_bug.cgi?id=3499	third party advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2021-38576?: CVE-2021-38576 has been scored as a high severity vulnerability.
How to fix CVE-2021-38576?: To fix CVE-2021-38576, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38576 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-38576 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-38576?: CVE-2021-38576 affects n/a EDK II.

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