{
  "fix": "KB4534271",
  "url": "https://patchblox.com/security/fix/microsoft/kb4534271",
  "summary": "KB4534271, released January 14, 2020, fixes 34 CVEs across 13 products. 2 of them are being exploited (CVE-2020-0646); 2 on CISA KEV. Patch Radar priority: Patch now.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "January 2020 cumulative update for Windows 10 1607",
  "released": "2020-01-14T00:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2020-0646, exploited (CISA KEV)",
  "supported": true,
  "cveCount": 34,
  "exploitedCveCount": 2,
  "kevCveCount": 2,
  "ransomwareCveCount": 0,
  "maxEpss": 0.99222,
  "maxCvss": 9.8,
  "vendorAdvisory": "https://support.microsoft.com/help/4534271",
  "appliesTo": [
    {
      "product": "Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/internet-explorer-11-on-windows-10-version-1607-for-32-bit-systems",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/internet-explorer-11-on-windows-10-version-1607-for-x64-based-systems",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Internet Explorer 11 on Windows Server 2016",
      "productUrl": "https://patchblox.com/security/product/microsoft/internet-explorer-11-on-windows-server-2016",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.6.2-4.7-4.7.1-4.7.2-on-windows-10-version-1607-for-32-bit-systems",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.6.2-4.7-4.7.1-4.7.2-on-windows-10-version-1607-for-x64-based-systems",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.6.2-4.7-4.7.1-4.7.2-on-windows-server-2016",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-and-4.6.2-4.7-4.7.1-4.7.2-on-windows-server-2016-server-core-installation",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-3.5-on-windows-10-version-1607-for-32-bit-systems",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-.net-framework-4.6.2-4.7-4.7.1-4.7.2-on-windows-10-version-1607-for-32-bit-systems",
      "fixedVersion": "14393.3443",
      "supported": false
    },
    {
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-10-version-1607-for-32-bit-systems",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-10-version-1607-for-x64-based-systems",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Windows Server 2016",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2016",
      "fixedVersion": "14393.3443",
      "supported": true
    },
    {
      "product": "Windows Server 2016 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2016-server-core-installation",
      "fixedVersion": "14393.3443",
      "supported": true
    }
  ],
  "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-2020-0601",
      "url": "https://patchblox.com/security/cve/CVE-2020-0601",
      "title": "Windows CryptoAPI Spoofing Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Spoofing",
      "priority": "Patch now",
      "severity": "Important",
      "cvss": 8.1,
      "epss": 0.89078,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0609",
      "url": "https://patchblox.com/security/cve/CVE-2020-0609",
      "title": "Windows Remote Desktop Gateway (RD Gateway) Remote Code Execution Vulnerability",
      "component": "Windows RDP",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
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      "epss": 0.77679,
      "kev": false,
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      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0610",
      "url": "https://patchblox.com/security/cve/CVE-2020-0610",
      "title": "Windows Remote Desktop Gateway (RD Gateway) Remote Code Execution Vulnerability",
      "component": "Windows RDP",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
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      "epss": 0.67569,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "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
    },
    {
      "cveId": "CVE-2020-0611",
      "url": "https://patchblox.com/security/cve/CVE-2020-0611",
      "title": "Remote Desktop Client Remote Code Execution Vulnerability",
      "component": "Windows RDP",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 7.5,
      "epss": 0.07184,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0634",
      "url": "https://patchblox.com/security/cve/CVE-2020-0634",
      "title": "Windows Common Log File System Driver Elevation of Privilege Vulnerability",
      "component": "Common Log File System Driver",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.01321,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0612",
      "url": "https://patchblox.com/security/cve/CVE-2020-0612",
      "title": "Windows Remote Desktop Gateway (RD Gateway) Denial of Service Vulnerability",
      "component": "Windows RDP",
      "impact": "Denial of Service",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.04875,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0642",
      "url": "https://patchblox.com/security/cve/CVE-2020-0642",
      "title": "Win32k Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.01605,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0635",
      "url": "https://patchblox.com/security/cve/CVE-2020-0635",
      "title": "Windows Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0113,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0641",
      "url": "https://patchblox.com/security/cve/CVE-2020-0641",
      "title": "Microsoft Windows Elevation of Privilege Vulnerability",
      "component": "Windows Media",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00988,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0644",
      "url": "https://patchblox.com/security/cve/CVE-2020-0644",
      "title": "Windows Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00931,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0613",
      "url": "https://patchblox.com/security/cve/CVE-2020-0613",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0091,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0633",
      "url": "https://patchblox.com/security/cve/CVE-2020-0633",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00872,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0614",
      "url": "https://patchblox.com/security/cve/CVE-2020-0614",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00864,
      "kev": false,
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      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0623",
      "url": "https://patchblox.com/security/cve/CVE-2020-0623",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00864,
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      "disclosed": false
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    {
      "cveId": "CVE-2020-0625",
      "url": "https://patchblox.com/security/cve/CVE-2020-0625",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
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      "cvss": 7.8,
      "epss": 0.00864,
      "kev": false,
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      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0627",
      "url": "https://patchblox.com/security/cve/CVE-2020-0627",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00864,
      "kev": false,
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      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0628",
      "url": "https://patchblox.com/security/cve/CVE-2020-0628",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
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      "epss": 0.00864,
      "kev": false,
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      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0631",
      "url": "https://patchblox.com/security/cve/CVE-2020-0631",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.0081,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0620",
      "url": "https://patchblox.com/security/cve/CVE-2020-0620",
      "title": "Microsoft Cryptographic Services Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00803,
      "kev": false,
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      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0626",
      "url": "https://patchblox.com/security/cve/CVE-2020-0626",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00803,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0629",
      "url": "https://patchblox.com/security/cve/CVE-2020-0629",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00803,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0630",
      "url": "https://patchblox.com/security/cve/CVE-2020-0630",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00803,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0632",
      "url": "https://patchblox.com/security/cve/CVE-2020-0632",
      "title": "Windows Search Indexer Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows Search Component",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00803,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0640",
      "url": "https://patchblox.com/security/cve/CVE-2020-0640",
      "title": "Internet Explorer Memory Corruption Vulnerability",
      "component": "Microsoft Scripting Engine",
      "impact": "Remote Code Execution",
      "priority": "Routine",
      "severity": "Moderate",
      "cvss": 6.4,
      "epss": 0.09215,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0607",
      "url": "https://patchblox.com/security/cve/CVE-2020-0607",
      "title": "Microsoft Graphics Component Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.06344,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0637",
      "url": "https://patchblox.com/security/cve/CVE-2020-0637",
      "title": "Remote Desktop Web Access Information Disclosure Vulnerability",
      "component": "Windows RDP",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.7,
      "epss": 0.05382,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0615",
      "url": "https://patchblox.com/security/cve/CVE-2020-0615",
      "title": "Windows Common Log File System Driver Information Disclosure Vulnerability",
      "component": "Common Log File System Driver",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.018,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0617",
      "url": "https://patchblox.com/security/cve/CVE-2020-0617",
      "title": "Hyper-V Denial of Service Vulnerability",
      "component": "Windows Hyper-V",
      "impact": "Denial of Service",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.3,
      "epss": 0.0141,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0608",
      "url": "https://patchblox.com/security/cve/CVE-2020-0608",
      "title": "Win32k Information Disclosure Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.014,
      "kev": false,
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      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0639",
      "url": "https://patchblox.com/security/cve/CVE-2020-0639",
      "title": "Windows Common Log File System Driver Information Disclosure Vulnerability",
      "component": "Common Log File System Driver",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.014,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0643",
      "url": "https://patchblox.com/security/cve/CVE-2020-0643",
      "title": "Windows GDI\u002B Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.014,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2020-0622",
      "url": "https://patchblox.com/security/cve/CVE-2020-0622",
      "title": "Microsoft Graphics Component Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.01388,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}