CVE-2026-45585

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The proof of concept for this vulnerability has been made public violating coordinated vulnerability best practices.\nWe are issuing this CVE to provide mitigation guidance that can be implemented to protect against this vulnerability until the security update is made available.\nMitigation FAQs\nShould I leverage the temporary mitigation?\nMicrosoft recommends that you consider implementing these mitigations if you are concerned your devices and data are at risk of being compromised or stolen. For example, if your organization\u2019s employees take their work devices home or on business travel.\nWhat impact to service availability/management could be caused by implementing the mitigations?\nImplementing these mitigations will not impact service availability or management operations.\nDo customers need to revert the changes made to mitigate the vulnerability once the security update to protect against this vulnerability is available?\nNo. The security update will maintain the mitigation's behavior once the security update is installed.\nI am using TPM+PIN, am I at risk of this vulnerability being exploited\nNo, if you are using TPM+PIN the vulnerability is not exploitable."}, {"lang": "es", "value": "Microsoft tiene conocimiento de una vulnerabilidad de omisi\u00f3n de caracter\u00edstica de seguridad en Windows conocida p\u00fablicamente como 'YellowKey'. La prueba de concepto para esta vulnerabilidad se ha hecho p\u00fablica violando las mejores pr\u00e1cticas de vulnerabilidad coordinada.\nEstamos emitiendo este CVE para proporcionar orientaci\u00f3n de mitigaci\u00f3n que se puede implementar para proteger contra esta vulnerabilidad hasta que la actualizaci\u00f3n de seguridad est\u00e9 disponible.\nPreguntas frecuentes sobre mitigaci\u00f3n\n\u00bfDebo utilizar la mitigaci\u00f3n temporal?\nMicrosoft recomienda que considere implementar estas mitigaciones si le preocupa que sus dispositivos y datos est\u00e9n en riesgo de ser comprometidos o robados. Por ejemplo, si los empleados de su organizaci\u00f3n llevan sus dispositivos de trabajo a casa o en viajes de negocios.\n\u00bfQu\u00e9 impacto en la disponibilidad/gesti\u00f3n del servicio podr\u00eda ser causado por la implementaci\u00f3n de las mitigaciones?\nLa implementaci\u00f3n de estas mitigaciones no tendr\u00e1 impacto en la disponibilidad del servicio o en las operaciones de gesti\u00f3n.\n\u00bfNecesitan los clientes revertir los cambios realizados para mitigar la vulnerabilidad una vez que la actualizaci\u00f3n de seguridad para proteger contra esta vulnerabilidad est\u00e9 disponible?\nNo. La actualizaci\u00f3n de seguridad mantendr\u00e1 el comportamiento de la mitigaci\u00f3n una vez que la actualizaci\u00f3n de seguridad est\u00e9 instalada.\nEstoy usando TPM+PIN, \u00bfestoy en riesgo de que esta vulnerabilidad sea explotada?\nNo, si est\u00e1 usando TPM+PIN la vulnerabilidad no es explotable."}], "id": "CVE-2026-45585", "lastModified": "2026-07-24T09:10:00.153", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "PHYSICAL", "availabilityImpact": "HIGH", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.9, "impactScore": 5.9, "source": "secure@microsoft.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-45585", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-20T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-20T00:16:44.380", "references": [{"source": "secure@microsoft.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45585"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/Nightmare-Eclipse/YellowKey"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "secure@microsoft.com", "type": "Secondary"}]}

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