{"affected":[{"affectedData":[{"product":"Windows","vendor":"Microsoft","versions":[{"status":"affected","version":"10 Version 1809 for x64-based Systems"},{"status":"affected","version":"10 Version 1607 for x64-based Systems"}]},{"product":"Windows Server","vendor":"Microsoft","versions":[{"status":"affected","version":"2019"},{"status":"affected","version":"2019  (Core installation)"},{"status":"affected","version":"2016"},{"status":"affected","version":"2016  (Core installation)"}]},{"product":"Windows Server, version 1903 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}]},{"product":"Windows 10 Version 1909 for x64-based Systems","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}]},{"product":"Windows Server, version 1909 (Server Core installation)","vendor":"Microsoft","versions":[{"status":"affected","version":"unspecified"}]}],"source":"secure@microsoft.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*","matchCriteriaId":"897A48D7-FCA1-4560-AFBB-718AF19BA3A2","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*","matchCriteriaId":"6CF580BA-6938-40F6-9D86-F43044A6BACA","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:x64:*","matchCriteriaId":"61F0792D-7587-4297-8EE7-D4DC3A30EE84","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*","matchCriteriaId":"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*","matchCriteriaId":"5B921FDB-8E7D-427E-82BE-4432585080CF","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*","matchCriteriaId":"C253A63F-03AB-41CB-A03A-B2674DEA98AA","vulnerable":true},{"criteria":"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*","matchCriteriaId":"DB79EE26-FC32-417D-A49C-A1A63165A968","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"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."},{"lang":"es","value":"Se presenta una vulnerabilidad de denegación de servicio cuando Microsoft Hyper-V en un servidor host no puede comprobar apropiadamente la entrada de un usuario privilegiado en un sistema operativo invitado, también se conoce como \"Windows Hyper-V Denial of Service Vulnerability\". Este ID de CVE es diferente de CVE-2020-0751."}],"id":"CVE-2020-0661","lastModified":"2026-06-17T02:46:17.253","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"MEDIUM","cvssData":{"accessComplexity":"LOW","accessVector":"ADJACENT_NETWORK","authentication":"SINGLE","availabilityImpact":"COMPLETE","baseScore":5.5,"confidentialityImpact":"NONE","integrityImpact":"NONE","vectorString":"AV:A/AC:L/Au:S/C:N/I:N/A:C","version":"2.0"},"exploitabilityScore":5.1,"impactScore":6.9,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.8,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":2.3,"impactScore":4.0,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2020-02-11T22:15:13.913","references":[{"source":"secure@microsoft.com","tags":["Patch","Vendor Advisory"],"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0661"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0661"}],"sourceIdentifier":"secure@microsoft.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-20"}],"source":"nvd@nist.gov","type":"Primary"}]}