{"$ref":"https://www.cert.ssi.gouv.fr/openapi.json","affected_systems":[{"description":"Windows Server 2025 (Server Core installation)","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}},{"description":"Windows Admin Center in Azure Portal versions ant\u00e9rieures \u00e0 0.72.0.0.","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}},{"description":"Windows Server 2025","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}},{"description":"Windows 11 version 26H1 pour syst\u00e8mes x64","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}},{"description":"Windows 11 Version 24H2 pour syst\u00e8mes x64","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}},{"description":"Windows 11 Version 25H2 pour syst\u00e8mes x64","product":{"name":"N/A","vendor":{"name":"Microsoft","scada":false}}}],"affected_systems_content":"","content":"## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l'\u00e9diteur pour l'obtention des correctifs (cf. section Documentation).","cves":[{"name":"CVE-2026-45585","url":"https://www.cve.org/CVERecord?id=CVE-2026-45585"},{"name":"CVE-2026-42834","url":"https://www.cve.org/CVERecord?id=CVE-2026-42834"}],"links":[],"reference":"CERTFR-2026-AVI-0622","revisions":[{"description":"Version initiale","revision_date":"2026-05-20T00:00:00.000000"}],"risks":[{"description":"Contournement de la politique de s\u00e9curit\u00e9"},{"description":"\u00c9l\u00e9vation de privil\u00e8ges"}],"summary":"De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Microsoft Windows. Elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges et un contournement de la politique de s\u00e9curit\u00e9.\n\nMicrosoft indique qu'une preuve de concept est disponible publiquement pour la vuln\u00e9rabilit\u00e9 CVE-2026-45585, aussi appel\u00e9e YellowKey. \u00c0 d\u00e9faut de publier un correctif de s\u00e9curit\u00e9, l'\u00e9diteur propose une mesure de contournement dans l'avis de s\u00e9curit\u00e9 associ\u00e9 (cf. section Documentation).","title":"Multiples vuln\u00e9rabilit\u00e9s dans Microsoft Windows","vendor_advisories":[{"published_at":"2026-05-19","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Windows CVE-2026-45585","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45585"},{"published_at":"2026-05-19","title":"Bulletin de s\u00e9curit\u00e9 Microsoft Windows CVE-2026-42834","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42834"}]}