{
  "cveId": "CVE-2021-1704",
  "url": "https://patchblox.com/security/cve/CVE-2021-1704",
  "summary": "CVE-2021-1704 is fixed in 23 products on 1 platform, first by KB4598243, released January 12, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Windows Hyper-V Elevation of Privilege Vulnerability",
  "description": "",
  "published": "2021-01-12T14:00:00Z",
  "severity": "Important",
  "cvss": 7.3,
  "epss": 0.01025,
  "epssPercentile": 0.63792,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1704",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.4169",
      "fix": "KB4598243",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598243",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.1967",
      "fix": "KB4598245",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598245",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.1697",
      "fix": "KB4598230",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598230",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "18363.1316",
      "fix": "KB4598229",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598229",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.18818",
      "fix": "KB4598231",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598231",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4598289",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598289",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4598279",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598279",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4598285",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598285",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4598275",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598275",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4598289",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598289",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4598279",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598279",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598289",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598289",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598279",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598279",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4598288",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598288",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4598287",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598287",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598288",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598288",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598287",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598287",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4598278",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598278",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4598297",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598297",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598278",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598278",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598297",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598297",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4598285",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598285",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4598275",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598275",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598285",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598285",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598275",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598275",
      "released": "2021-01-12T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.4169",
      "fix": "KB4598243",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598243",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.4169",
      "fix": "KB4598243",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598243",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.1697",
      "fix": "KB4598230",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598230",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.1697",
      "fix": "KB4598230",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598230",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "18363.1316",
      "fix": "KB4598229",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598229",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 2004 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 20H2 (Server Core Installation)",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "released": "2021-01-12T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}