Edk Ii
CVE-2021-28216
HIGH
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE.
AnalysisAI
BootPerformanceTable pointer is read from an NVRAM variable in PEI. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-587. BootPerformanceTable pointer is read from an NVRAM variable in PEI. Recommend setting PcdFirmwarePerformanceDataTableS3Support to FALSE. Affected products include: Tianocore Edk Ii.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Buffer overflow in system firmware for EDK II may allow unauthenticated user to potentially enable escalation of privile
Stack overflow in XHCI for EDK II may allow an unauthenticated user to potentially enable denial of service via local ac
Same technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today