{
  "fix": "KB4471328",
  "url": "https://patchblox.com/security/fix/microsoft/kb4471328",
  "summary": "KB4471328, released December 11, 2018, fixes 9 CVEs across 5 products. 2 of them are being exploited (CVE-2018-8639); 2 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "December 2018 security update",
  "released": "2018-12-11T08:00:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2018-8639, exploited (CISA KEV, ransomware)",
  "supported": false,
  "cveCount": 9,
  "exploitedCveCount": 2,
  "kevCveCount": 2,
  "ransomwareCveCount": 1,
  "maxEpss": 0.22349,
  "maxCvss": 7,
  "vendorAdvisory": "https://support.microsoft.com/help/4471328",
  "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 Itanium-Based Systems Service Pack 1",
      "productUrl": "https://patchblox.com/security/product/microsoft/windows-server-2008-r2-for-itanium-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-2018-8639",
      "url": "https://patchblox.com/security/cve/CVE-2018-8639",
      "title": "Win32k Elevation of Privilege Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Patch now",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.22349,
      "kev": true,
      "ransomware": true,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8611",
      "url": "https://patchblox.com/security/cve/CVE-2018-8611",
      "title": "Windows Kernel Elevation of Privilege Vulnerability",
      "component": "Windows Kernel",
      "impact": "Elevation of Privilege",
      "priority": "Patch now",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.04196,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8596",
      "url": "https://patchblox.com/security/cve/CVE-2018-8596",
      "title": "Windows GDI Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 4.7,
      "epss": 0.07073,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8595",
      "url": "https://patchblox.com/security/cve/CVE-2018-8595",
      "title": "Windows GDI Information Disclosure Vulnerability",
      "component": "Microsoft Graphics Component",
      "impact": "Information Disclosure",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 4.7,
      "epss": 0.06923,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8477",
      "url": "https://patchblox.com/security/cve/CVE-2018-8477",
      "title": "Windows Kernel Information Disclosure Vulnerability",
      "component": "Windows Kernel",
      "impact": "Information Disclosure",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 3.3,
      "epss": 0.01796,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8641",
      "url": "https://patchblox.com/security/cve/CVE-2018-8641",
      "title": "Win32k Elevation of Privilege Vulnerability",
      "component": "Windows Kernel-Mode Drivers",
      "impact": "Elevation of Privilege",
      "priority": "Urgent",
      "severity": "Important",
      "cvss": 7,
      "epss": 0.01116,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8514",
      "url": "https://patchblox.com/security/cve/CVE-2018-8514",
      "title": "Windows Remote Procedure Call Information Disclosure Vulnerability",
      "component": "Microsoft Windows DNS",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 3.3,
      "epss": 0.01889,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8621",
      "url": "https://patchblox.com/security/cve/CVE-2018-8621",
      "title": "Windows Kernel Information Disclosure Vulnerability",
      "component": "Windows Kernel",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 4.7,
      "epss": 0.01835,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-8622",
      "url": "https://patchblox.com/security/cve/CVE-2018-8622",
      "title": "Windows Kernel Information Disclosure Vulnerability",
      "component": "Windows Kernel",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 4.7,
      "epss": 0.01835,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T00:32:44Z"
}