{"id":"CVE-2021-26865","aliases":["EUVD-2021-13649","GHSA-v4c6-vp8p-vp9p"],"status":"published","title":"Windows Container Execution Agent Elevation of Privilege Vulnerability","description":"Windows Container Execution Agent Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01075,"percentile":0.65377,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-03-11T15:38:36Z","modified":"2026-08-19T18:31:29Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"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 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"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-2021-26865","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26865","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26865"},{"url":"https://github.com/advisories/GHSA-v4c6-vp8p-vp9p"}],"sources":{"cve":[{"id":"CVE-2021-26865","title":"Windows Container Execution Agent Elevation of Privilege Vulnerability","description":"Windows Container Execution Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:38:36Z","modified":"2026-08-19T16:30:20.315Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-2021-13649","description":"Windows Container Execution Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T15:38:36Z","modified":"2026-08-19T16:30:20Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-v4c6-vp8p-vp9p","title":"Windows Container Execution Agent Elevation of Privilege Vulnerability This CVE ID is unique from...","description":"Windows Container Execution Agent Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-26891.","status":"published","published":"2022-05-24T17:44:18Z","modified":"2026-08-19T18:31:29Z","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"],"updated_at":"2026-11-02T15:10:40.42434Z"}],"nvd":[{"id":"CVE-2021-26865","description":"Windows Container Execution Agent Elevation of Privilege Vulnerability","status":"published","published":"2021-03-11T16:15:14.38Z","modified":"2026-08-19T17:17:40.11Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:50.805771Z"}]}}