{
  "cveId": "CVE-2021-1663",
  "url": "https://patchblox.com/security/cve/CVE-2021-1663",
  "summary": "CVE-2021-1663 is fixed in 7 products on 1 platform, first by KB4598242, released January 12, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Windows Projected File System FS Filter Driver Information Disclosure Vulnerability",
  "description": "",
  "published": "2021-01-12T14:00:00Z",
  "severity": "Important",
  "cvss": 5.5,
  "epss": 0.01222,
  "epssPercentile": 0.68844,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1663",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 2004 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "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 Version 20H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "released": "2021-01-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 20H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4598242",
      "url": "https://patchblox.com/security/fix/microsoft/kb4598242",
      "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": "2026-11-07T12:40:37Z"
}