{"id":"CVE-2021-26900","aliases":["EUVD-2021-13684","GHSA-95m3-vm2v-9vf3"],"status":"published","title":"Windows Win32k Elevation of Privilege Vulnerability","description":"Windows Win32k Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.02449,"percentile":0.84598,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269","CWE-416"],"published":"2021-03-11T15:44:10Z","modified":"2026-08-19T18:32:36Z","products":[{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 10 version 20h2"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server version 20h2"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_server_2016"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26900","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26900","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-331/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26900"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-331"},{"url":"https://github.com/advisories/GHSA-95m3-vm2v-9vf3"}],"sources":{"cve":[{"id":"CVE-2021-26900","title":"Windows Win32k Elevation of Privilege Vulnerability","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:44:10Z","modified":"2026-08-19T16:30:38.723Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:57.368269Z"}],"euvd":[{"id":"EUVD-2021-13684","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:44:10Z","modified":"2026-08-19T16:30:38Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:01:42.411264Z"}],"ghsa":[{"id":"GHSA-95m3-vm2v-9vf3","title":"Windows Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26863,...","description":"Windows Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26863, CVE-2021-26875, CVE-2021-27077.","status":"published","published":"2022-05-24T17:44:22Z","modified":"2026-08-19T18:32:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269","CWE-416"],"updated_at":"2026-11-02T15:10:42.300371Z"}],"nvd":[{"id":"CVE-2021-26900","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T16:15:16.567Z","modified":"2026-08-19T17:17:46.917Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}