Description
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.
Published: 2026-11-10
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 10 Nov 2026 22:15:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-1257
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-11-10T22:11:36.116Z

Reserved: 2026-02-25T15:31:49.067Z

Link: CVE-2026-28247

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T22:18:32.220

Modified: 2026-11-10T22:18:32.220

Link: CVE-2026-28247

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-1257

    Improper Access Control Applied to Mirrored or Aliased Memory Regions