{"cve_id":"CVE-2023-21529","published":"2023-02-14T20:15:11.743000+00:00","last_modified":"2026-08-19T17:18:05.870000+00:00","vuln_status":"Analyzed","description":"Microsoft Exchange Server Remote Code Execution Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","base_score":8.8,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"LOW","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-502"],"in_kev":true,"kev_date_added":"2026-04-13","kev_ransomware":true,"epss_score":0.59294,"epss_percentile":0.99119,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"USER","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T10:19:43.779082+00:00","first_seen":"2023-02-14T20:15:11.743000+00:00","kev_first_seen":"2026-04-13T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["exchange_server"],"affected":[{"vendor":"microsoft","product":"exchange_server","ranges":["2013","2016","2019"]}]}