{"id":"CVE-2026-21533","published":"2026-02-10T18:16:35Z","modified":"2026-06-17T10:18:47Z","title":"Microsoft Windows Improper Privilege Management Vulnerability","vendor":"Microsoft","product":"Windows","tier":"core","eol":null,"description":{"text":"Improper privilege management in Windows Remote Desktop allows an authorized attacker to elevate privileges locally.","provenance":"source","from":"NVD"},"summary":null,"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":0.04182,"percentile":0.90912,"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-2026-21533 ; https://nvd.nist.gov/vuln/detail/CVE-2026-21533","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-2026-21533","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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