{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-09-22T22:44:43.735","vulnerabilities":[{"cve":{"id":"CVE-2026-23554","sourceIdentifier":"security@xen.org","published":"2026-03-23T07:16:07.200","lastModified":"2026-06-17T10:21:46.330","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"The Intel EPT paging code uses an optimization to defer flushing of any cached\nEPT state until the p2m lock is dropped, so that multiple modifications done\nunder the same locked region only issue a single flush.\n\nFreeing of paging structures however is not deferred until the flushing is\ndone, and can result in freed pages transiently being present in cached state.\nSuch stale entries can point to memory ranges not owned by the guest, thus\nallowing access to unintended memory regions."},{"lang":"es","value":"El código de paginación EPT de Intel utiliza una optimización para aplazar el vaciado de cualquier estado EPT en caché hasta que se libere el bloqueo p2m, de modo que múltiples modificaciones realizadas bajo la misma región bloqueada solo emitan un único vaciado.\n\nLa liberación de estructuras de paginación, sin embargo, no se aplaza hasta que se complete el vaciado, y puede resultar en que las páginas liberadas estén transitoriamente presentes en estado de caché. Dichas entradas obsoletas pueden apuntar a rangos de memoria no poseídos por el invitado, permitiendo así el acceso a regiones de memoria no intencionadas."}],"affected":[{"source":"security@xen.org","affectedData":[{"vendor":"Xen","product":"Xen","defaultStatus":"unknown","versions":[{"version":"consult Xen advisory XSA-480","status":"unknown"}]}]}],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":1.1,"impactScore":6.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-23T14:18:54.774466Z","id":"CVE-2026-23554","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-367"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:*","versionStartIncluding":"4.17","matchCriteriaId":"1B149544-81AE-4439-B77E-F4C973187511"}]}]}],"references":[{"url":"https://xenbits.xenproject.org/xsa/advisory-480.html","source":"security@xen.org","tags":["Patch","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/17/6","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Patch","Third Party Advisory"]},{"url":"http://xenbits.xen.org/xsa/advisory-480.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"]}]}}]}