{"id":"CVE-2020-1047","aliases":["EUVD-2020-11940","GHSA-cr49-gvqw-pcg9"],"status":"published","title":"Windows Hyper-V Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly handle objects in memory. An attacker who successfully exploited these vulnerabilities could gain elevated privileges on a target operating system.\u003c/p\u003e\n\u003cp\u003eThis vulnerability by itself does not allow arbitrary code to be run.  However, this vulnerability could be used in conjunction with one or more vulnerabilities (e.g. a remote code execution vulnerability and another elevation of privilege) that could take advantage of the elevated privileges when running.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerabilities by correcting how Windows Hyper-V handles objects in memory.\u003c/p\u003e","severity":{"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/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0089,"percentile":0.5967,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2020-10-16T22:18:13Z","modified":"2026-06-17T03:00:19Z","products":[{"vendor":"microsoft","product":"windows 10 version 1709"},{"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 server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server version 2004"},{"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-2020-1047","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1047"},{"url":"https://github.com/advisories/GHSA-cr49-gvqw-pcg9"}],"sources":{"cve":[{"id":"CVE-2020-1047","title":"Windows Hyper-V Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly handle objects in memory. An attacker who successfully exploited these vulnerabilities could gain elevated privileges on a target operating system.\u003c/p\u003e\n\u003cp\u003eThis vulnerability by itself does not allow arbitrary code to be run.  However, this vulnerability could be used in conjunction with one or more vulnerabilities (e.g. a remote code execution vulnerability and another elevation of privilege) that could take advantage of the elevated privileges when running.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerabilities by correcting how Windows Hyper-V handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:13Z","modified":"2024-08-04T06:25:01.114Z","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/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-11940","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly handle objects in memory. An attacker who successfully exploited these vulnerabilities could gain elevated privileges on a target operating system.\u003c/p\u003e\n\u003cp\u003eThis vulnerability by itself does not allow arbitrary code to be run.  However, this vulnerability could be used in conjunction with one or more vulnerabilities (e.g. a remote code execution vulnerability and another elevation of privilege) that could take advantage of the elevated privileges when running.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerabilities by correcting how Windows Hyper-V handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:13Z","modified":"2024-08-04T06:25:01Z","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/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:08:15.605178Z"}],"ghsa":[{"id":"GHSA-cr49-gvqw-pcg9","title":"An elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to...","description":"An elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly handle objects in memory, aka 'Windows Hyper-V Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1080.","status":"published","published":"2022-05-24T17:30:49Z","modified":"2023-12-31T21:30:24Z","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-119"],"updated_at":"2026-11-02T14:55:18.712206Z"}],"nvd":[{"id":"CVE-2020-1047","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when Windows Hyper-V on a host server fails to properly handle objects in memory. An attacker who successfully exploited these vulnerabilities could gain elevated privileges on a target operating system.\u003c/p\u003e\n\u003cp\u003eThis vulnerability by itself does not allow arbitrary code to be run.  However, this vulnerability could be used in conjunction with one or more vulnerabilities (e.g. a remote code execution vulnerability and another elevation of privilege) that could take advantage of the elevated privileges when running.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerabilities by correcting how Windows Hyper-V handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T23:15:17.523Z","modified":"2026-06-17T03:00:19.16Z","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","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"}],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}