CVE-2026-0438

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{"defaultStatus": "affected", "product": "AMD Ryzen\u2122 Embedded 8000 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedPhoenixPI-FP7r2_1.0.0.4"}]}, {"defaultStatus": "affected", "product": "AMD Ryzen\u2122 Embedded 7000 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "EmbeddedAM5PI 1.0.0.5"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 4004 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "ComboAM5PI 1.0.0.d / ComboAM5PI 1.1.0.3f / ComboAM5PI_1.2.0.3i"}]}, {"defaultStatus": "affected", "product": "AMD EPYC\u2122 4005 Series Processors", "vendor": "AMD", "versions": [{"status": "unaffected", "version": "ComboAM5PI_1.2.0.3i"}]}], "source": "psirt@amd.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A System Management Mode (SMM) handler could perform a callout to code located in non-SMM/untrusted memory. A highly privileged attacker could, with active user interaction and under high complexity and present preconditions, trigger execution of attacker-controlled code in SMM, potentially compromising the system\u2019s confidentiality, integrity, and availability."}, {"lang": "es", "value": "Un gestor de System Management Mode (SMM) podr\u00eda realizar una llamada a c\u00f3digo ubicado en memoria no-SMM/no confiable. Un atacante con altos privilegios podr\u00eda, con interacci\u00f3n activa del usuario y bajo alta complejidad y precondiciones presentes, desencadenar la ejecuci\u00f3n de c\u00f3digo controlado por el atacante en SMM, comprometiendo potencialmente la confidencialidad, integridad y disponibilidad del sistema."}], "id": "CVE-2026-0438", "lastModified": "2026-10-26T14:10:00.130", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "PHYSICAL", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.4, "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": "NONE", "userInteraction": "ACTIVE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "psirt@amd.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-0438", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-15T13:17:40.357741Z", "version": "2.0.3"}}]}, "published": "2026-05-15T02:16:23.637", "references": [{"source": "psirt@amd.com", "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3030.html"}, {"source": "psirt@amd.com", "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4017.html"}], "sourceIdentifier": "psirt@amd.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1072"}], "source": "psirt@amd.com", "type": "Secondary"}]}

{}

{"created": "2026-05-15T04:00:12.860298+00:00", "title": "SMM Callout Handler Enables Execution of Untrusted Code", "updated": "2026-05-15T04:00:12.860310+00:00", "vendors": []}