VulnerabilityModified
CVE-2021-28216
BootPerformanceTable pointer is read from an NVRAM variable in PEI.
HIGH 7.8EPSS 0.42%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.42%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.42% probability · 36th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-587, CWE-763
- Affected
- tianocore/edk ii
- Source
- infosec@edk2.groups.io
References
- https://bugzilla.tianocore.org/show_bug.cgi?id=2957Exploit, Issue Tracking, Vendor Advisory
- https://bugzilla.tianocore.org/show_bug.cgi?id=2957Exploit, Issue Tracking, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.