{"cve_id":"CVE-2023-21554","published":"2023-04-11T21:15:15.597000+00:00","last_modified":"2026-06-17T05:33:09.760000+00:00","vuln_status":"Modified","description":"Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","base_score":9.8,"base_severity":"CRITICAL","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-20"],"in_kev":false,"kev_date_added":null,"kev_ransomware":false,"epss_score":0.95412,"epss_percentile":0.99868,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T10:24:26.127813+00:00","first_seen":"2023-04-11T21:15:15.597000+00:00","kev_first_seen":null,"novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["windows_10_1607","windows_10_1809","windows_10_20h2","windows_10_21h2","windows_10_22h2","windows_11_21h2","windows_11_22h2","windows_server_2008","windows_server_2012","windows_server_2016","windows_server_2019","windows_server_2022"],"affected":[{"vendor":"microsoft","product":"windows_10_1607","ranges":["< 10.0.14393.5850"]},{"vendor":"microsoft","product":"windows_10_1809","ranges":["< 10.0.17763.4252"]},{"vendor":"microsoft","product":"windows_10_20h2","ranges":["< 10.0.19042.2846"]},{"vendor":"microsoft","product":"windows_10_21h2","ranges":["< 10.0.19044.2846"]},{"vendor":"microsoft","product":"windows_10_22h2","ranges":["< 10.0.19045.2846"]},{"vendor":"microsoft","product":"windows_11_21h2","ranges":["< 10.0.22000.1817"]},{"vendor":"microsoft","product":"windows_11_22h2","ranges":["< 10.0.22621.1555"]},{"vendor":"microsoft","product":"windows_server_2008","ranges":["all versions","r2"]},{"vendor":"microsoft","product":"windows_server_2012","ranges":["all versions","r2"]},{"vendor":"microsoft","product":"windows_server_2016","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_server_2019","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_server_2022","ranges":["all versions"]}]}