{
  "fix": "KB4535101",
  "url": "https://patchblox.com/security/fix/microsoft/kb4535101",
  "summary": "KB4535101, released January 14, 2020, fixes 2 CVEs across 8 products. One of them is being exploited (CVE-2020-0646); 1 on CISA KEV. Patch Radar priority: Patch now.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "January 2020 security update",
  "released": "2020-01-14T08:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2020-0646, exploited (CISA KEV)",
  "supported": true,
  "cveCount": 2,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 0,
  "maxEpss": 0.99222,
  "vendorAdvisory": "https://support.microsoft.com/help/4535101",
  "appliesTo": [
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-10-version-1809-for-32-bit-systems",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-10-version-1809-for-x64-based-systems",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-server-2019",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.7.2-on-windows-server-2019-server-core-installation",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-10-version-1809-for-32-bit-systems",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-10-version-1809-for-x64-based-systems",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-server-2019",
      "fixedVersion": "",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.8-on-windows-server-2019-server-core-installation",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2020-0646",
      "url": "https://patchblox.com/security/cve/CVE-2020-0646",
      "title": ".NET Framework Remote Code Execution Injection Vulnerability",
      "component": ".NET Framework",
      "impact": "Remote Code Execution",
      "priority": "Patch now",
      "severity": "Critical",
      "epss": 0.99222,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0606",
      "url": "https://patchblox.com/security/cve/CVE-2020-0606",
      "title": ".NET Framework Remote Code Execution Vulnerability",
      "component": ".NET Framework",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "epss": 0.18343,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}