{"$ref":"https://www.cert.ssi.gouv.fr/openapi.json","affected_systems":[{"description":"Xen versions xen-unstable sans les correctifs de s\u00e9curit\u00e9 xsa477.patch et xsa479.patch","product":{"name":"Xen","vendor":{"name":"XEN","scada":false}}},{"description":"Xen versions 4.18.x sans les correctifs de s\u00e9curit\u00e9 xsa477-4.18.patch et xsa479.patch","product":{"name":"Xen","vendor":{"name":"XEN","scada":false}}},{"description":"Xen versions 4.19.x sans le correctif de securit\u00e9 xsa477.patch","product":{"name":"Xen","vendor":{"name":"XEN","scada":false}}},{"description":"Xen version varstored master sans le correctif de s\u00e9curit\u00e9 xsa478.patch","product":{"name":"Xen","vendor":{"name":"XEN","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-2026-23553","url":"https://www.cve.org/CVERecord?id=CVE-2026-23553"},{"name":"CVE-2025-58151","url":"https://www.cve.org/CVERecord?id=CVE-2025-58151"},{"name":"CVE-2025-58150","url":"https://www.cve.org/CVERecord?id=CVE-2025-58150"}],"links":[],"reference":"CERTFR-2026-AVI-0091","revisions":[{"description":"Version initiale","revision_date":"2026-01-27T00:00:00.000000"}],"risks":[{"description":"D\u00e9ni de service \u00e0 distance"},{"description":"Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"},{"description":"\u00c9l\u00e9vation de privil\u00e8ges"}],"summary":"De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Xen. Certaines d'entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.","title":"Multiples vuln\u00e9rabilit\u00e9s dans Xen","vendor_advisories":[{"published_at":"2026-01-27","title":"Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-477","url":"https://xenbits.xen.org/xsa/advisory-477.html"},{"published_at":"2026-01-27","title":"Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-478","url":"https://xenbits.xen.org/xsa/advisory-478.html"},{"published_at":"2026-01-27","title":"Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-479","url":"https://xenbits.xen.org/xsa/advisory-479.html"}]}