Authentication bypass by spoofing in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to request attestation reports for VMPL 0.

Attack Vector Local

Attack Complexity Low

Privileges Required High

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00198.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
AMD AMD EPYC™ 9004 Series Processors affected
Version Status Constraints
GenoaPI_1.0.0.J unaffected —
AMD AMD EPYC™ 7003 Series Processors affected
Version Status Constraints
MilanPI-SP3_1.0.0.K unaffected —
AMD AMD EPYC™ 9005 Series Processors affected
Version Status Constraints
TurinPI_1.0.0.B unaffected —
AMD AMD EPYC™ 8004 Series Processors affected
Version Status Constraints
GenoaPI_1.0.0.J unaffected —
AMD AMD EPYC™ 8005 Series Processors affected
Version Status Constraints
TurinPI_1.0.0.B unaffected —
AMD AMD EPYC™ Embedded 7003 Series Processors affected
Version Status Constraints
EmbMilanPI-SP3 1.0.0.E unaffected —
AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Genoa") affected
Version Status Constraints
EmbeddedGenoaPI_1.0.0.E unaffected —
AMD AMD EPYC™ Embedded 9004 Series Processors (formerly codenamed "Bergamo") affected
Version Status Constraints
EmbeddedGenoaPI_1.0.0.E unaffected —
AMD AMD EPYC™ Embedded 8004 Series Processors affected
Version Status Constraints
EmbeddedGenoaPI_1.0.0.E unaffected —
AMD AMD EPYC™ Embedded 9005 Series Processors affected
Version Status Constraints
EmbeddedTurinPI_SP5_1005 unaffected —

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html cve-icon cve-icon
History

Thu, 12 Nov 2026 02:00:00 +0000

Type Values Removed Values Added
Title Authentication Bypass in AMD SEV Firmware Allowing Hypervisor to Request VMPL 0 Attestation Reports

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

Type Values Removed Values Added
Description Authentication bypass by spoofing in AMD Secure Encrypted Virtualization (SEV) firmware could allow a malicious hypervisor to request attestation reports for VMPL 0.
Weaknesses CWE-290
References
Metrics cvssV4_0

{'score': 4.6, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: AMD

Published:

Updated: 2026-11-10T22:11:05.184Z

Reserved: 2026-04-14T17:04:40.591Z

Link: CVE-2026-40668

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-10T22:18:32.777

Modified: 2026-11-10T22:18:32.777

Link: CVE-2026-40668

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-12T01:45:22Z

Weaknesses