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CVE-2021-26387

Published: Aug 13, 2024Updated: Oct 30, 2024 Sources: CVE List NVDCWE-863
NVD MITRE
3.9CVSSLOW
EPSS Score
0.1%
Top 95.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Insufficient access controls in ASP kernel may allow a privileged attacker with access to AMD signing keys and the BIOS menu or UEFI shell to map DRAM regions in protected areas, potentially leading to a loss of platform integrity.

CVSS Vector Breakdown

AV:LAC:HPR:HUI:NS:CC:NI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-863

Affected Products

AMD EPYC™ 7001 Series ProcessorsAMDHardware Firmware
AMD EPYC™ 7002 Series ProcessorsAMDHardware Firmware
AMD EPYC™ 7003 Series ProcessorsAMDHardware Firmware
AMD EPYC™ 9004 Series ProcessorsAMDHardware Firmware
AMD Ryzen™ 3000 Series Desktop ProcessorsAMDHardware Firmware
amdcommercialUSHardware Firmwareaka advanced micro devices
and 26 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html
amd.com
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html
amd.com

Timeline

Published
Aug 13, 2024
Last Updated
Oct 30, 2024

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