PT-2021-6806 · Edk2+2 · Edk2+2

Published 2021-08-05 · Updated 2025-06-05 · CVE-2021-28216

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions EDK2 (affected versions not specified)

Description The issue is related to the function FpdtStatusCodeListenerPei() in the open-source UEFI EDK2 development environment. It involves the release of an incorrect pointer, which can be exploited by an attacker to gain access to confidential data, compromise its integrity, and cause a denial of service. The BootPerformanceTable pointer is read from an NVRAM variable in PEI.

Recommendations For EDK2, set PcdFirmwarePerformanceDataTableS3Support to FALSE to mitigate the issue. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Weakness Enumeration

CWE-763

CWE-587

Related Identifiers

BDU:2022-02229

CVE-2021-28216

DLA-4207-1

OESA-2021-1458

Affected Products

Astra Linux

Debian

Edk2

References · 19

• 🔥 https://bugzilla.tianocore.org/show_bug.cgi?id=2957 · Exploit
• https://osv.dev/vulnerability/OESA-2021-1458 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-28216 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28216 · Security Note
• https://bdu.fstec.ru/vul/2022-02229 · Security Note
• https://osv.dev/vulnerability/DLA-4207-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-28216 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-28216 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-28216 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-28216 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-28216 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se17-bulletin-2024-0830SE17 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2024-1031SE47 · Vendor Advisory
• https://github.com/tianocore/edk2/commit/466ebdd2e0919c1538d03cd59833704bd5e1c028 · Note
• https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html · Note