{"cve_id":"CVE-2023-21674","published":"2023-01-10T22:15:16.307000+00:00","last_modified":"2026-06-17T05:33:36.547000+00:00","vuln_status":"Analyzed","description":"Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","base_score":8.8,"base_severity":"HIGH","attack_vector":"LOCAL","privileges_req":"LOW","user_interaction":"NONE","scope":"CHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-416"],"in_kev":true,"kev_date_added":"2023-01-10","kev_ransomware":false,"epss_score":0.34206,"epss_percentile":0.98404,"cap_rule_version":"0.1.1","stage":"PRIV_ESC","req_access":"USER","req_vector":"LOCAL","req_user_interaction":false,"grant_access":"PRIV","caps":["CODE_EXEC","PRIV_GAIN"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T10:17:57.136255+00:00","first_seen":"2023-01-10T22:15:16.307000+00:00","kev_first_seen":"2023-01-10T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["windows_10_1507","windows_10_1607","windows_10_1809","windows_10_20h2","windows_10_21h2","windows_10_22h2","windows_11_21h2","windows_11_22h2","windows_rt_8.1","windows_server_2012","windows_server_2016","windows_server_2019","windows_server_2022"],"affected":[{"vendor":"microsoft","product":"windows_10_1507","ranges":["< 10.0.10240.19685"]},{"vendor":"microsoft","product":"windows_10_1607","ranges":["< 10.0.14393.5648"]},{"vendor":"microsoft","product":"windows_10_1809","ranges":["< 10.0.17763.3887"]},{"vendor":"microsoft","product":"windows_10_20h2","ranges":["< 10.0.19042.2486"]},{"vendor":"microsoft","product":"windows_10_21h2","ranges":["< 10.0.19044.2486"]},{"vendor":"microsoft","product":"windows_10_22h2","ranges":["< 10.0.19045.2486"]},{"vendor":"microsoft","product":"windows_11_21h2","ranges":["< 10.0.22000.1455"]},{"vendor":"microsoft","product":"windows_11_22h2","ranges":["< 10.0.22621.1105"]},{"vendor":"microsoft","product":"windows_rt_8.1","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_server_2012","ranges":["r2"]},{"vendor":"microsoft","product":"windows_server_2016","ranges":["< 10.0.14393.5648"]},{"vendor":"microsoft","product":"windows_server_2019","ranges":["< 10.0.17763.3887"]},{"vendor":"microsoft","product":"windows_server_2022","ranges":["< 10.0.20348.1487"]}]}