Vulnerability · Published Jan 3, 2022 · Assigned by TianoCore
CVE-2021-38576
High 7.5
In plain English
A high-severity security flaw in EDK II. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 70% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.3%top 30.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | edk2 | 2021.11-1 | DEBIAN-CVE-2021-38576 |
| Debian:13 | edk2 | 2021.11-1 | DEBIAN-CVE-2021-38576 |
| Debian:14 | edk2 | 2021.11-1 | DEBIAN-CVE-2021-38576 |