{"cve_id":"CVE-2021-34448","published":"2021-07-16T21:15:09.580000+00:00","last_modified":"2026-08-10T19:58:48.893000+00:00","vuln_status":"Analyzed","description":"Scripting Engine Memory Corruption Vulnerability","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","base_score":6.8,"base_severity":"MEDIUM","attack_vector":"NETWORK","privileges_req":"NONE","user_interaction":"REQUIRED","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"NONE","cwe_ids":["CWE-787"],"in_kev":true,"kev_date_added":"2021-11-03","kev_ransomware":false,"epss_score":0.40062,"epss_percentile":0.98633,"cap_rule_version":"0.1.1","stage":"INITIAL_ACCESS","req_access":"NONE","req_vector":"NETWORK","req_user_interaction":true,"grant_access":"USER","caps":["CODE_EXEC","INFO_DISCLOSURE"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T09:46:15.678744+00:00","first_seen":"2021-07-16T21:15:09.580000+00:00","kev_first_seen":"2021-11-03T00:00:00+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_1909","windows_10_2004","windows_10_20h2","windows_10_21h1","windows_7","windows_8.1","windows_rt_8.1","windows_server_2008","windows_server_2012","windows_server_2016","windows_server_2019"],"affected":[{"vendor":"microsoft","product":"windows_10_1507","ranges":["< 10.0.10240.19003"]},{"vendor":"microsoft","product":"windows_10_1607","ranges":["< 10.0.14393.4530"]},{"vendor":"microsoft","product":"windows_10_1809","ranges":["< 10.0.17763.2061"]},{"vendor":"microsoft","product":"windows_10_1909","ranges":["< 10.0.18363.1679"]},{"vendor":"microsoft","product":"windows_10_2004","ranges":["< 10.0.19041.1110"]},{"vendor":"microsoft","product":"windows_10_20h2","ranges":["< 10.0.19042.1110"]},{"vendor":"microsoft","product":"windows_10_21h1","ranges":["< 10.0.19043.1110"]},{"vendor":"microsoft","product":"windows_7","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_8.1","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_rt_8.1","ranges":["all versions"]},{"vendor":"microsoft","product":"windows_server_2008","ranges":["r2"]},{"vendor":"microsoft","product":"windows_server_2012","ranges":["all versions","r2"]},{"vendor":"microsoft","product":"windows_server_2016","ranges":["< 10.0.14393.4530"]},{"vendor":"microsoft","product":"windows_server_2019","ranges":["< 10.0.17763.2061"]}]}