Improper Firmware Enforcement in AMD Secure Encrypted Virtualization
CVE-2026-28248

5.9MEDIUM

Key Information:

Vendor

Amd
Status
Amd Epyc™ 9004 Series Processors
Amd Epyc™ 7003 Series Processors
Amd Epyc™ 9005 Series Processors
Amd Epyc™ 8004 Series Processors
Vendor
CVE Published:
10 November 2026

What is CVE-2026-28248?

A flaw in the AMD Secure Encrypted Virtualization (SEV) firmware can lead to improper enforcement of the behavioral workflow, enabling a malicious hypervisor to potentially initiate a guest process with an attestation report that has a mismatched ID key digest. This mismatch could jeopardize the integrity of the guest by allowing unauthorized access or manipulation. Users of AMD SEV should ensure that their firmware is up to date to mitigate potential security risks.

Affected Version(s)

AMD EPYC™ 7003 Series Processors MilanPI-SP3_1.0.0.K

AMD EPYC™ 8004 Series Processors GenoaPI_1.0.0.J

AMD EPYC™ 8005 Series Processors TurinPI_1.0.0.B

References

https://www.amd.com/en/resources/product-security/bulleti...

CVSS V4

Score:
5.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.