{"id":"CVE-2021-26863","aliases":["EUVD-2021-13647","GHSA-7ghw-9j2m-8ffh"],"status":"published","title":"Windows Win32k Elevation of Privilege Vulnerability","description":"Windows Win32k Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/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":"2026-11-11","score":0.11943,"percentile":0.9617,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-03-11T15:37:22Z","modified":"2026-08-19T18:32:32Z","products":[{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"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 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"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"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26863","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26863","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/161768/Microsoft-Windows-Kernel-NtGdiGetDeviceCapsAll-Race-Condition-Use-After-Free.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26863"},{"url":"https://github.com/advisories/GHSA-7ghw-9j2m-8ffh"}],"sources":{"cve":[{"id":"CVE-2021-26863","title":"Windows Win32k Elevation of Privilege Vulnerability","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:37:22Z","modified":"2026-08-19T16:30:19.115Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:32:57.033395Z"}],"euvd":[{"id":"EUVD-2021-13647","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:37:22Z","modified":"2026-08-19T16:30:19Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:01:42.811156Z"}],"ghsa":[{"id":"GHSA-7ghw-9j2m-8ffh","title":"Windows Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26875,...","description":"Windows Win32k Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26875, CVE-2021-26900, CVE-2021-27077.","status":"published","published":"2022-05-24T17:44:18Z","modified":"2026-08-19T18:32:32Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:10:42.300371Z"}],"nvd":[{"id":"CVE-2021-26863","description":"Windows Win32k Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T16:15:14.237Z","modified":"2026-08-19T17:17:39.73Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/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-269"],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}