CVE-2021-28216
CVE-2021-28216 is a high-severity vulnerability in Tianocore Edk Ii with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-763.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 4.6
- EPSS exploit prediction: 0% (34th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-763
- Affected product: Tianocore Edk Ii
- Published:
- Last modified:
Description
BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.
Frequently asked questions
- What is CVE-2021-28216?
- BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.
- How severe is CVE-2021-28216?
- CVE-2021-28216 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2021-28216 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2021-28216?
- CVE-2021-28216 affects Tianocore Edk Ii. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2021-28216?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2021-28216 published?
- CVE-2021-28216 was published on 2021-08-05 and last updated on 2026-06-17.
References
- https://bugzilla.tianocore.org/show_bug.cgi?id=2957
- https://lists.debian.org/debian-lts-announce/2025/06/msg00007.html
Affected products (1)
- cpe:2.3:a:tianocore:edk_ii:-:*:*:*:*:*:*:*
More vulnerabilities in Tianocore Edk Ii
- CVE-2019-0160 — Critical (CVSS 9.8): Buffer overflow in system firmware for EDK II may allow unauthenticated user to potentially enable escalation of…
- CVE-2018-12178 — Critical (CVSS 9.1): Buffer overflow in network stack for EDK II may allow unprivileged user to potentially enable escalation of privilege…
- CVE-2018-12180 — High (CVSS 8.8): Buffer overflow in BlockIo service for EDK II may allow an unauthenticated user to potentially enable escalation of…
- CVE-2018-3613 — High (CVSS 7.8): Logic issue in variable service module for EDK II/UDK2018/UDK2017/UDK2015 may allow an authenticated user to…
- CVE-2018-12179 — High (CVSS 7.8): Improper configuration in system firmware for EDK II may allow unauthenticated user to potentially enable escalation of…
- CVE-2019-11098 — Medium (CVSS 6.8): Insufficient input validation in MdeModulePkg in EDKII may allow an unauthenticated user to potentially enable…
All CVEs affecting Tianocore Edk Ii →
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