Vulnerability in Tianocore Edk Ii
CVE-2021-28216
BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Tianocore Edk Ii — versions EDK II Master
- Tianocore Edk Ii
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.tianocore.org/show_bug.cgi (Exploit, Issue Tracking, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-28216?
- CVE-2021-28216 is a high-severity vulnerability in Tianocore Edk Ii, classified under CWE-587. CVSS score: 7.8/10. Published 2021-08-05.
- How severe is CVE-2021-28216?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-28216 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.