{
  "fix": "KB4598289",
  "url": "https://patchblox.com/security/fix/microsoft/kb4598289",
  "summary": "KB4598289, released January 12, 2021, fixes 34 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "January 2021 security update",
  "released": "2021-01-12T14:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2021-1665, rated Critical",
  "supported": false,
  "cveCount": 34,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.04703,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://support.microsoft.com/help/4598289",
  "appliesTo": [
    {
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-7-for-32-bit-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-7-for-x64-based-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-x64-based-systems-service-pack-1-server-core-installation",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-1665",
      "url": "https://patchblox.com/security/cve/CVE-2021-1665",
      "title": "GDI\u002B Remote Code Execution Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 7.8,
      "epss": 0.04063,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1668",
      "url": "https://patchblox.com/security/cve/CVE-2021-1668",
      "title": "Microsoft DTV-DVD Video Decoder Remote Code Execution Vulnerability",
      "component": "Microsoft DTV-DVD Video Decoder",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 7.8,
      "epss": 0.03917,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1667",
      "url": "https://patchblox.com/security/cve/CVE-2021-1667",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.03865,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1658",
      "url": "https://patchblox.com/security/cve/CVE-2021-1658",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1660",
      "url": "https://patchblox.com/security/cve/CVE-2021-1660",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1666",
      "url": "https://patchblox.com/security/cve/CVE-2021-1666",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1673",
      "url": "https://patchblox.com/security/cve/CVE-2021-1673",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1709",
      "url": "https://patchblox.com/security/cve/CVE-2021-1709",
      "title": "Windows Win32k Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.00785,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1700",
      "url": "https://patchblox.com/security/cve/CVE-2021-1700",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.03865,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1701",
      "url": "https://patchblox.com/security/cve/CVE-2021-1701",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.03865,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1694",
      "url": "https://patchblox.com/security/cve/CVE-2021-1694",
      "title": "Windows Update Stack Elevation of Privilege Vulnerability",
      "component": "Windows Update Stack",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.5,
      "epss": 0.03507,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1664",
      "url": "https://patchblox.com/security/cve/CVE-2021-1664",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1671",
      "url": "https://patchblox.com/security/cve/CVE-2021-1671",
      "title": "Remote Procedure Call Runtime Remote Code Execution Vulnerability",
      "component": "Windows Remote Procedure Call Runtime",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1674",
      "url": "https://patchblox.com/security/cve/CVE-2021-1674",
      "title": "Windows Remote Desktop Protocol Core Security Feature Bypass Vulnerability",
      "component": "Windows Remote Desktop",
      "impact": "Security Feature Bypass",
      "priority": "High",
      "severity": "Important",
      "cvss": 8.8,
      "epss": 0.03204,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1706",
      "url": "https://patchblox.com/security/cve/CVE-2021-1706",
      "title": "Windows LUAFV Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.3,
      "epss": 0.02249,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1704",
      "url": "https://patchblox.com/security/cve/CVE-2021-1704",
      "title": "Windows Hyper-V Elevation of Privilege Vulnerability",
      "component": "Windows Hyper-V",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.3,
      "epss": 0.01025,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1657",
      "url": "https://patchblox.com/security/cve/CVE-2021-1657",
      "title": "Windows Fax Compose Form Remote Code Execution Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00954,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1695",
      "url": "https://patchblox.com/security/cve/CVE-2021-1695",
      "title": "Windows Print Spooler Elevation of Privilege Vulnerability",
      "component": "Windows Print Spooler Components",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00867,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1661",
      "url": "https://patchblox.com/security/cve/CVE-2021-1661",
      "title": "Windows Installer Elevation of Privilege Vulnerability",
      "component": "Windows Installer",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00834,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1649",
      "url": "https://patchblox.com/security/cve/CVE-2021-1649",
      "title": "Active Template Library Elevation of Privilege Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1652",
      "url": "https://patchblox.com/security/cve/CVE-2021-1652",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1653",
      "url": "https://patchblox.com/security/cve/CVE-2021-1653",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1654",
      "url": "https://patchblox.com/security/cve/CVE-2021-1654",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1655",
      "url": "https://patchblox.com/security/cve/CVE-2021-1655",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1693",
      "url": "https://patchblox.com/security/cve/CVE-2021-1693",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1702",
      "url": "https://patchblox.com/security/cve/CVE-2021-1702",
      "title": "Windows Remote Procedure Call Runtime Elevation of Privilege Vulnerability",
      "component": "Windows Remote Procedure Call",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00789,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1659",
      "url": "https://patchblox.com/security/cve/CVE-2021-1659",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00696,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1688",
      "url": "https://patchblox.com/security/cve/CVE-2021-1688",
      "title": "Windows CSC Service Elevation of Privilege Vulnerability",
      "component": "Windows CSC Service",
      "impact": "Elevation of Privilege",
      "priority": "High",
      "severity": "Important",
      "cvss": 7.8,
      "epss": 0.00696,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1696",
      "url": "https://patchblox.com/security/cve/CVE-2021-1696",
      "title": "Windows Graphics Component Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.04703,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1679",
      "url": "https://patchblox.com/security/cve/CVE-2021-1679",
      "title": "Windows CryptoAPI  Denial of Service Vulnerability",
      "component": "Windows CryptoAPI",
      "impact": "Denial of Service",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 6.5,
      "epss": 0.03744,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1708",
      "url": "https://patchblox.com/security/cve/CVE-2021-1708",
      "title": "Windows GDI\u002B Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.7,
      "epss": 0.03715,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1656",
      "url": "https://patchblox.com/security/cve/CVE-2021-1656",
      "title": "TPM Device Driver Information Disclosure Vulnerability",
      "component": "Windows TPM Device Driver",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.03009,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1699",
      "url": "https://patchblox.com/security/cve/CVE-2021-1699",
      "title": "Windows (modem.sys) Information Disclosure Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.02136,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-1676",
      "url": "https://patchblox.com/security/cve/CVE-2021-1676",
      "title": "Windows NT Lan Manager Datagram Receiver Driver Information Disclosure Vulnerability",
      "component": "Microsoft Windows",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.01321,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}