CVE-2021-28216

HIGHNVD 7.87.8—

7.8

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

CVSS v3: 7.8
EG Score: 7.8(medium)
EPSS: 33.2%
KEV: Not listed

Published

August 5, 2021

Last Modified

November 3, 2025

References (3)

infosec@edk2https://bugzilla.tianocore.org/show_bug.cgi?id=2957
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.tianocore.org/show_bug.cgi?id=2957
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 12:33 UTCEG score recompute
2026-05-26 12:33 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28216?

CVE-2021-28216 is a high vulnerability published on August 5, 2021. BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.

When was CVE-2021-28216 disclosed?

CVE-2021-28216 was first published in the National Vulnerability Database on August 5, 2021, with the most recent update on November 3, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-28216 actively exploited?

CVE-2021-28216 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 33.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28216?

CVE-2021-28216 has a CVSS v3 base score of 7.8 (NVD).

How do I remediate CVE-2021-28216?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28216, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-28216

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CVE-2021-28216

📅 Published

🔄 Last Modified

🔗 References (3)