{"id":"CVE-2021-26418","aliases":["EUVD-2021-13224","GHSA-h9wj-h268-pfrp"],"status":"published","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Microsoft SharePoint Server Spoofing Vulnerability","severity":{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0124,"percentile":0.69389,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-290","CWE-863"],"published":"2021-05-11T19:11:10Z","modified":"2026-06-17T03:43:22Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2016"},{"vendor":"microsoft","product":"microsoft sharepoint foundation 2013 service pack 1"},{"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-2021-26418","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26418"},{"url":"https://github.com/advisories/GHSA-h9wj-h268-pfrp"}],"sources":{"cve":[{"id":"CVE-2021-26418","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Microsoft SharePoint Server Spoofing Vulnerability","status":"published","published":"2021-05-11T19:11:10Z","modified":"2025-02-28T20:57:40.798Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13224","description":"Microsoft SharePoint Server Spoofing Vulnerability","status":"published","published":"2021-05-11T19:11:10Z","modified":"2025-02-28T20:57:40Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T20:53:19.078289Z"}],"ghsa":[{"id":"GHSA-h9wj-h268-pfrp","title":"Microsoft SharePoint Spoofing Vulnerability This CVE ID is unique from CVE-2021-28478, CVE-2021...","description":"Microsoft SharePoint Spoofing Vulnerability This CVE ID is unique from CVE-2021-28478, CVE-2021-31172.","status":"published","published":"2022-05-24T19:02:04Z","modified":"2025-02-28T21:32:56Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high"}],"cwes":["CWE-290","CWE-863"],"updated_at":"2026-11-02T15:00:05.58597Z"}],"nvd":[{"id":"CVE-2021-26418","description":"Microsoft SharePoint Server Spoofing Vulnerability","status":"published","published":"2021-05-11T19:15:08.793Z","modified":"2026-06-17T03:43:22.453Z","cvss":[{"version":"3.1","score":4.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N","level":"high","assessor":"secondary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}