{"id":"CVE-2020-0890","aliases":["EUVD-2020-2358","GHSA-r384-9q9m-w3m5"],"status":"published","title":"Windows Hyper-V Denial of Service Vulnerability","description":"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.02838,"percentile":0.86756,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-269"],"published":"2020-09-11T17:08:28Z","modified":"2026-06-17T02:46:54Z","exploits":[{"source":"pocgithub","id":"gerhart01/hyperv_local_dos_poc","title":"gerhart01/hyperv_local_dos_poc","date":"2020-09-03","url":"https://github.com/gerhart01/hyperv_local_dos_poc"},{"source":"pocgithub","id":"skasanagottu57gmailv/gerhart01","title":"skasanagottu57gmailv/gerhart01","date":"2022-03-19","url":"https://github.com/skasanagottu57gmailv/gerhart01"}],"products":[{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"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-2020-0890","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-0890"},{"url":"https://github.com/advisories/GHSA-r384-9q9m-w3m5"}],"sources":{"cve":[{"id":"CVE-2020-0890","title":"Windows Hyper-V Denial of Service Vulnerability","description":"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:28Z","modified":"2024-08-04T06:18:03.464Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:59.763887Z"}],"euvd":[{"id":"EUVD-2020-2358","description":"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:28Z","modified":"2024-08-04T06:18:03Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T03:08:17.347367Z"}],"ghsa":[{"id":"GHSA-r384-9q9m-w3m5","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 specific malicious data from a user on a guest operating system.To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests., aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2020-0904.","status":"published","published":"2022-05-24T17:27:54Z","modified":"2024-01-09T05:04:48Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:55:21.919096Z"}],"nvd":[{"id":"CVE-2020-0890","description":"\u003cp\u003eA denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system.\u003c/p\u003e\n\u003cp\u003eTo exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.\u003c/p\u003e","status":"published","published":"2020-09-11T17:15:14.497Z","modified":"2026-06-17T02:46:54.977Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.9,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:C","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}