{"id":"CVE-2020-17040","aliases":["EUVD-2020-8997","GHSA-8599-937f-746w"],"status":"published","title":"Windows Hyper-V Security Feature Bypass Vulnerability","description":"Windows Hyper-V Security Feature Bypass Vulnerability","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.02697,"percentile":0.8611,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2020-11-11T06:48:14Z","modified":"2026-06-17T02:58:32Z","products":[{"vendor":"microsoft","product":"windows 10 version 1507"},{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows 8.1"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"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 1903 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17040","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-17040"},{"url":"https://github.com/advisories/GHSA-8599-937f-746w"}],"sources":{"cve":[{"id":"CVE-2020-17040","title":"Windows Hyper-V Security Feature Bypass Vulnerability","description":"Windows Hyper-V Security Feature Bypass Vulnerability","status":"published","published":"2020-11-11T06:48:14Z","modified":"2024-09-10T15:51:51.766Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:54.80237Z"}],"euvd":[{"id":"EUVD-2020-8997","description":"Windows Hyper-V Security Feature Bypass Vulnerability","status":"published","published":"2020-11-11T06:48:14Z","modified":"2024-09-10T15:51:51Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:55:59.274325Z"}],"ghsa":[{"id":"GHSA-8599-937f-746w","title":"Windows Hyper-V Security Feature Bypass Vulnerability","description":"Windows Hyper-V Security Feature Bypass Vulnerability","status":"published","published":"2022-05-24T17:33:44Z","modified":"2024-01-09T05:05:05Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:55:22.44362Z"}],"nvd":[{"id":"CVE-2020-17040","description":"Windows Hyper-V Security Feature Bypass Vulnerability","status":"published","published":"2020-11-11T07:15:15.873Z","modified":"2026-06-17T02:58:32.237Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:24.137599Z"}]}}