{"cve_id":"CVE-2021-40450","published":"2021-10-13T01:15:09.750000+00:00","last_modified":"2026-06-17T04:06:56.627000+00:00","vuln_status":"Analyzed","description":"Win32k Elevation of Privilege Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","base_score":7.8,"base_severity":"HIGH","attack_vector":"LOCAL","privileges_req":"LOW","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":[],"in_kev":true,"kev_date_added":"2022-04-25","kev_ransomware":false,"epss_score":0.01582,"epss_percentile":0.75542,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"USER","req_vector":"LOCAL","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"medium","ingested_at":"2026-09-18T09:52:02.050231+00:00","first_seen":"2021-10-13T01:15:09.750000+00:00","kev_first_seen":"2022-04-25T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["windows_10_1809","windows_10_1909","windows_10_2004","windows_10_20h2","windows_10_21h1","windows_11_21h2","windows_server_2004","windows_server_2019","windows_server_2022","windows_server_20h2"],"affected":[{"vendor":"microsoft","product":"windows_10_1809","ranges":["< 10.0.17763.2237"]},{"vendor":"microsoft","product":"windows_10_1909","ranges":["< 10.0.18363.1854"]},{"vendor":"microsoft","product":"windows_10_2004","ranges":["< 10.0.19041.1288"]},{"vendor":"microsoft","product":"windows_10_20h2","ranges":["< 10.0.19042.1288"]},{"vendor":"microsoft","product":"windows_10_21h1","ranges":["< 10.0.19043.1288"]},{"vendor":"microsoft","product":"windows_11_21h2","ranges":["< 10.0.22000.258"]},{"vendor":"microsoft","product":"windows_server_2004","ranges":["< 10.0.19041.1288"]},{"vendor":"microsoft","product":"windows_server_2019","ranges":["< 10.0.17763.2237"]},{"vendor":"microsoft","product":"windows_server_2022","ranges":["< 10.0.20348.288"]},{"vendor":"microsoft","product":"windows_server_20h2","ranges":["< 10.0.19042.1288"]}]}