Low severity · published Aug 13, 2024
CVE-2021-26387
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…
3.9
CVSS
0.1%
EPSS
No
On KEV
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
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:N/I:L/A:L
Attack vector
Local
Complexity
High
Privileges
High
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AA
AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
AA
AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
AE
AMD EPYC™ 7001 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ 7002 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ 7003 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ 9004 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 3000 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 7002 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 7003 Series Processors · AMD
various · source: vendor
AE
AMD EPYC™ Embedded 9003 Series Processors · AMD
various · source: vendor
AR
AMD Ryzen™ 3000 Series Desktop Processors · AMD
All versions, or not specified · source: vendor
AR
AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics · AMD
All versions, or not specified · source: vendor
Affected product
AA
AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics
AMD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-26387
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-26387
www.amd.com
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-3003.html
www.amd.com
https://www.amd.com/en/resources/product-security/bulletin/amd-sb-5002.html
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