{"id":"CVE-2021-28450","aliases":["EUVD-2021-15129","GHSA-xw5f-m9q2-678f"],"status":"published","title":"Microsoft SharePoint Denial of Service Vulnerability","description":"Microsoft SharePoint Denial of Service Vulnerability","severity":{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.02559,"percentile":0.85294,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-04-13T19:33:33Z","modified":"2026-06-17T03:46:22Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2016"},{"vendor":"microsoft","product":"microsoft sharepoint foundation 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft sharepoint server 2019"},{"vendor":"microsoft","product":"sharepoint_foundation"},{"vendor":"microsoft","product":"sharepoint_server"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28450","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28450"},{"url":"https://github.com/advisories/GHSA-xw5f-m9q2-678f"}],"sources":{"cve":[{"id":"CVE-2021-28450","title":"Microsoft SharePoint Denial of Service Vulnerability","description":"Microsoft SharePoint Denial of Service Vulnerability","status":"published","published":"2021-04-13T19:33:33Z","modified":"2024-08-03T21:40:14.463Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:33:09.175141Z"}],"euvd":[{"id":"EUVD-2021-15129","description":"Microsoft SharePoint Denial of Service Vulnerability","status":"published","published":"2021-04-13T19:33:33Z","modified":"2024-08-03T21:40:14Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T03:24:46.751124Z"}],"ghsa":[{"id":"GHSA-xw5f-m9q2-678f","title":"Microsoft SharePoint Denial of Service Update","description":"Microsoft SharePoint Denial of Service Update","status":"published","published":"2022-05-24T17:47:26Z","modified":"2024-01-06T05:06:06Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T14:55:20.878476Z"}],"nvd":[{"id":"CVE-2021-28450","description":"Microsoft SharePoint Denial of Service Vulnerability","status":"published","published":"2021-04-13T20:15:20.14Z","modified":"2026-06-17T03:46:22.933Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:51.610648Z"}]}}