CVE-2021-38576
7.5
HIGH
CVSS 3.1
EPSS 0.26%
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.
How to fix CVE-2021-38576
To remediate CVE-2021-38576, upgrade the affected package to a fixed version below.
- Debian/edk2—upgrade to 2020.11-2+deb11u3 or later
Is CVE-2021-38576 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2020.11-2+deb11u3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |