Firmware Vulnerability in AMD Secure Encrypted Virtualization
CVE-2026-28249

4.6MEDIUM

Key Information:

Vendor

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

What is CVE-2026-28249?

The vulnerability involves an improper preservation of consistency between independent representations of shared state within AMD's Secure Encrypted Virtualization firmware. This flaw could allow a malicious hypervisor to manipulate cache coherency for guest context pages, posing potential risks to the integrity of the affected systems. As a result, it is crucial for users to be aware of this vulnerability and implement recommended security measures to protect their virtualized environments.

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™ 9004 Series Processors GenoaPI_1.0.0.J

References

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

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.