{"id":"CVE-2020-0661","aliases":["EUVD-2020-2154","GHSA-3mg6-q5xj-qqwc"],"status":"published","title":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to...","description":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01632,"percentile":0.76577,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-02-11T21:22:48Z","modified":"2026-06-17T02:46:17Z","products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1909 for x64-based systems"},{"vendor":"microsoft","product":"windows server"},{"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_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0661","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-0661"},{"url":"https://github.com/advisories/GHSA-3mg6-q5xj-qqwc"}],"sources":{"cve":[{"id":"CVE-2020-0661","description":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.","status":"published","published":"2020-02-11T21:22:48Z","modified":"2024-08-04T06:11:05.322Z","updated_at":"2026-11-02T14:35:59.763887Z"}],"euvd":[{"id":"EUVD-2020-2154","description":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.","status":"published","published":"2020-02-11T21:22:48Z","modified":"2024-08-04T06:11:05Z","updated_at":"2026-11-03T03:08:18.296952Z"}],"ghsa":[{"id":"GHSA-3mg6-q5xj-qqwc","title":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to...","description":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.","status":"published","published":"2022-05-24T17:08:25Z","modified":"2023-01-29T05:01:37Z","updated_at":"2026-11-02T14:44:52.185162Z"}],"nvd":[{"id":"CVE-2020-0661","description":"A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate input from a privileged user on a guest operating system, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0751.","status":"published","published":"2020-02-11T22:15:13.913Z","modified":"2026-06-17T02:46:17.253Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:A/AC:L/Au:S/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:05:53.837808Z"}]}}