CVE-2026-40669

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-40669
StatePUBLISHED
AssignerAMD
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-10 22:18:32 UTC
Updated2026-11-10 22:18:32 UTC
DescriptionAn off-by-one error in AMD Secure Encrypted Virtualization (SEV) firmware could allow an attacker with hypervisor access to corrupt the Reverse Map Table (RMP) table, potentially resulting in loss of guest memory integrity.

Risk And Classification

Primary CVSS: v4.0 4 MEDIUM from [email protected]

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-193 | CWE-193 CWE-193 Off-by-one Error

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary4MEDIUMCVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/C...
4.0CNACVSS4MEDIUMCVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N

CVSS v4.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Attack Requirements
Present
Privileges Required
High
User Interaction
None
Confidentiality
None
Integrity
None
Availability
None
Sub Conf.
None
Sub Integrity
High
Sub Availability
None

CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA AMD AMD EPYC 9004 Series Processors unaffected GenoaPI_1.0.0.J Not specified
CNA AMD AMD EPYC 7003 Series Processors unaffected MilanPI-SP3_1.0.0.K Not specified
CNA AMD AMD EPYC 8004 Series Processors unaffected GenoaPI_1.0.0.J Not specified
CNA AMD AMD EPYC Embedded 7003 Series Processors unaffected EmbMilanPI-SP3 1.0.0.E Not specified
CNA AMD AMD EPYC Embedded 9004 Series Processors Formerly Codenamed Genoa unaffected EmbeddedGenoaPI_1.0.0.E Not specified
CNA AMD AMD EPYC Embedded 9004 Series Processors Formerly Codenamed Bergamo unaffected EmbeddedGenoaPI_1.0.0.E Not specified
CNA AMD AMD EPYC Embedded 8004 Series Processors unaffected EmbeddedGenoaPI_1.0.0.E Not specified

References

ReferenceSourceLinkTags
www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html [email protected] www.amd.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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