CVSS 4.0
5.9 mediumCVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:NCVE-2026-28247
Medium (5.9) in amd.
Improper Access Control Applied to Mirrored or Aliased Memory Regions in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to change the encryption bit for guest context pages potentially resulting in loss of integrity.
Severity
- CWE
- CWE-1257 Improper Access Control Applied to Mirrored or Aliased Memory Regions
- Published
- Assigned by
- AMD (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- amd:amd epyc™ 7003 series processors
- amd:amd epyc™ 8004 series processors
- amd:amd epyc™ 8005 series processors
- amd:amd epyc™ 9004 series processors
- amd:amd epyc™ 9005 series processors
- amd:amd epyc™ embedded 7003 series processors
- amd:amd epyc™ embedded 8004 series processors
- amd:amd epyc™ embedded 9004 series processors (formerly codenamed "genoa")
- amd:amd epyc™ embedded 9004 series processors (formerly codenamed "bergamo")
- amd:amd epyc™ embedded 9005 series processors
Attack patterns (CAPEC)
- CAPEC-456 Infected Memory Likelihood: Medium · Severity: High
- CAPEC-679 Exploitation of Improperly Configured or Implemented Memory Protections Likelihood: Medium · Severity: Very High
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.