{"affected": [{"affectedData": [{"defaultStatus": "affected", "product": "AMD EPYC\u2122 9004 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "GenoaPI_1.0.0.J"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 7003 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "MilanPI-SP3_1.0.0.K"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 9005 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "TurinPI_1.0.0.B"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 8004 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "GenoaPI_1.0.0.J"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 8005 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "TurinPI_1.0.0.B"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 Embedded 7003 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbMilanPI-SP3 1.0.0.E"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 Embedded 9004 Series Processors (formerly codenamed \"Genoa\")", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedGenoaPI_1.0.0.E"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 Embedded 9004 Series Processors (formerly codenamed \"Bergamo\")", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedGenoaPI_1.0.0.E"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 Embedded 8004 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedGenoaPI_1.0.0.E"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 Embedded 9005 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedTurinPI_SP5_1005"}]}], "source": "psirt@amd.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper check for unusual or exceptional conditions in AMD Secure Encrypted Virtualization - Secure Nested Paging (SEV-SNP) could allow a privileged attacker to potentially overlap MMIO regions with DRAM regions resulting in loss of integrity."}], "id": "CVE-2026-40670", "lastModified": "2026-11-13T00:20:17.290", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "LOCAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "HIGH", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "HIGH", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/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", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@amd.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-40670", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-12T23:46:27.417167Z", "version": "2.0.3"}}]}, "published": "2026-11-10T22:18:33.047", "references": [{"source": "psirt@amd.com", "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html"}], "sourceIdentifier": "psirt@amd.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-754"}], "source": "psirt@amd.com", "type": "Secondary"}]}