{"id":"CVE-2021-28453","aliases":["EUVD-2021-15132","GHSA-2qcm-m6xq-w233"],"status":"published","title":"Microsoft Word Remote Code Execution Vulnerability","description":"Microsoft Word Remote Code Execution Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.04053,"percentile":0.90778,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-04-13T19:33:35Z","modified":"2026-06-17T03:46:23Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft office 2019 for mac"},{"vendor":"microsoft","product":"microsoft office online server"},{"vendor":"microsoft","product":"microsoft office web apps 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft office web apps server 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2016"},{"vendor":"microsoft","product":"microsoft sharepoint server 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft sharepoint server 2019"},{"vendor":"microsoft","product":"microsoft word 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft word 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft word 2016"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"office_online_server"},{"vendor":"microsoft","product":"office_web_apps"},{"vendor":"microsoft","product":"office_web_apps_server"},{"vendor":"microsoft","product":"sharepoint_server"},{"vendor":"microsoft","product":"word"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28453","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-423/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28453"},{"url":"https://github.com/advisories/GHSA-2qcm-m6xq-w233"}],"sources":{"cve":[{"id":"CVE-2021-28453","title":"Microsoft Word Remote Code Execution Vulnerability","description":"Microsoft Word Remote Code Execution Vulnerability","status":"published","published":"2021-04-13T19:33:35Z","modified":"2024-08-03T21:40:14.344Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15132","description":"Microsoft Word Remote Code Execution Vulnerability","status":"published","published":"2021-04-13T19:33:35Z","modified":"2024-08-03T21:40:14Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:24:46.751124Z"}],"ghsa":[{"id":"GHSA-2qcm-m6xq-w233","title":"Microsoft Word Remote Code Execution Vulnerability","description":"Microsoft Word Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T17:47:26Z","modified":"2023-12-29T03:30:26Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:55:17.557989Z"}],"nvd":[{"id":"CVE-2021-28453","description":"Microsoft Word Remote Code Execution Vulnerability","status":"published","published":"2021-04-13T20:15:20.343Z","modified":"2026-06-17T03:46:23.283Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}