{"id":"CVE-2026-21519","published":"2026-02-10T18:16:34Z","modified":"2026-06-17T10:18:46Z","title":"Microsoft Windows Type Confusion Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Access of resource using incompatible type ('type confusion') in Desktop Window Manager allows an authorized attacker to elevate privileges locally.","provenance":"source","from":"NVD"},"summary":{"text":"A type confusion flaw in the Desktop Window Manager component of Microsoft Windows lets code access a resource through an incompatible type. An attacker who already has an authorized, low-privileged local account can exploit it to elevate privileges, with no user interaction required.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:14:21Z"},"cvss":{"score":7.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.02477,"percentile":0.84538,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2026-02-10","dueDate":"2026-03-03","ransomware":false,"requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","notes":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21519 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21519","provenance":"source"},"vulncheckKev":{"dateAdded":"2026-02-10","exploitedFirstSeen":"2026-02-10","ransomware":false,"evidence":[{"url":"https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Feb","date":"2026-02-10"},{"url":"https://docs.google.com/spreadsheets/d/1lkNJ0uQwbeC1ZTRrxdtuPLCIl7mlUreoKfSIgajnSyY/edit","date":"2026-02-10"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21519","date":"2026-02-10"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2026-02-10"},{"url":"https://www.recordedfuture.com/blog/february-2026-cve-landscape","date":"2026-03-12"},{"url":"https://ti.qianxin.com/uploads/2026/10/29/20ab59a356a884498644cff73d47a13a.pdf","date":"2026-10-29"}],"evidenceTotal":6,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 31, 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Manager","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"allows an authorized attacker to elevate privileges locally","start":88,"end":147}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-7358","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-7358","exploited":true,"exploitedSince":"2026-02-10","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1068"],"provenance":"ai"}],"timeline":[{"date":"2026-02-10","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21519","provenance":"source"},{"date":"2026-02-10","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV 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