{
  "cveId": "CVE-2019-1230",
  "url": "https://patchblox.com/security/cve/CVE-2019-1230",
  "summary": "CVE-2019-1230 is fixed in 7 products on 1 platform, first by KB4520010, released October 8, 2019. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Hyper-V Information Disclosure Vulnerability",
  "description": "\u003Cp\u003EAn information disclosure vulnerability exists when the Windows Hyper-V Network Switch on a host operating system fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker on a guest operating system could run a specially crafted application that could cause the Hyper-V host operating system to disclose memory information.\u003C/p\u003E\n\u003Cp\u003EAn attacker who successfully exploited the vulnerability could gain access to information on the Hyper-V host operating system.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how the Windows Hyper-V Network Switch validates guest operating system user input.\u003C/p\u003E",
  "published": "2019-10-08T12:00:00Z",
  "severity": "Important",
  "cvss": 6.8,
  "epss": 0.05802,
  "epssPercentile": 0.93172,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1230",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1703 for x64-based Systems",
      "fixedVersion": "15063.2108",
      "fix": "KB4520010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4520010",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for x64-based Systems",
      "fixedVersion": "16299.1451",
      "fix": "KB4520004",
      "url": "https://patchblox.com/security/fix/microsoft/kb4520004",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.1069",
      "fix": "KB4520008",
      "url": "https://patchblox.com/security/fix/microsoft/kb4520008",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.805",
      "fix": "KB4519338",
      "url": "https://patchblox.com/security/fix/microsoft/kb4519338",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.805",
      "fix": "KB4519338",
      "url": "https://patchblox.com/security/fix/microsoft/kb4519338",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.805",
      "fix": "KB4519338",
      "url": "https://patchblox.com/security/fix/microsoft/kb4519338",
      "released": "2019-10-08T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.1069",
      "fix": "KB4520008",
      "url": "https://patchblox.com/security/fix/microsoft/kb4520008",
      "released": "2019-10-08T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}