BootPerformanceTable pointer is read from an NVRAM variable in PEI.

published 2021-08-05 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-14906

cvss: 7.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 36%
public exploits: 0; none known

BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.

Patch / fix

distros 2

debian arch linux

edk2 Debian 14, Debian 13, Debian 12 2021.11~rc1-1

debian advisories DEBIAN-CVE-2021-28216

edk2-shell Arch Linux 202111-1

arch linux advisories AVG-2592

Exploit prediction

0.42% chance of exploitation in the next 30 days, higher than 36% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

bugzilla.tianocore.org https://bugzilla.tianocore.org/show_bug.cgi?id=2957 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

TianoCore EDK II

Classification

Weakness

CWE-587 Assignment of a Fixed Address to a Pointer
CWE-763 Release of Invalid Pointer or Reference

References

bugzilla.tianocore.org /show_bug.cgi?id=2957
exploit, issue-tracking, vendor-advisory
lists.debian.org /debian-lts-announce/2025/06/msg00007.html

Sources

CVE List CVE-2021-28216
NVD CVE-2021-28216

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary