{
  "cveId": "CVE-2018-8440",
  "url": "https://patchblox.com/security/cve/CVE-2018-8440",
  "summary": "CVE-2018-8440 is fixed in 31 products on 1 platform, first by KB4457131, released September 11, 2018. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 28, 2022, with known ransomware use. Patch Radar priority: Patch now.",
  "title": "Windows ALPC Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC).\u003C/p\u003E\n\u003Cp\u003EAn attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\u003C/p\u003E\n\u003Cp\u003ETo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control over an affected system.\u003C/p\u003E\n\u003Cp\u003EThe update addresses the vulnerability by correcting how Windows handles calls to ALPC.\u003C/p\u003E",
  "published": "2018-09-11T07:00:00Z",
  "severity": "Important",
  "cvss": 7.8,
  "epss": 0.1853,
  "epssPercentile": 0.97264,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": true,
  "exploitabilityAssessment": "Exploitation More Likely",
  "kev": {
    "added": "2022-03-28T00:00:00Z",
    "due": "2022-04-18T00:00:00Z",
    "ransomware": true,
    "requiredAction": "Apply updates per vendor instructions."
  },
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8440",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.2485",
      "fix": "KB4457131",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457131",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.2485",
      "fix": "KB4457131",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457131",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1703 for 32-bit Systems",
      "fixedVersion": "15063.1324",
      "fix": "KB4457138",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457138",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1703 for x64-based Systems",
      "fixedVersion": "15063.1324",
      "fix": "KB4457138",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457138",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for 32-bit Systems",
      "fixedVersion": "16299.665",
      "fix": "KB4457142",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457142",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for x64-based Systems",
      "fixedVersion": "16299.665",
      "fix": "KB4457142",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457142",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for 32-bit Systems",
      "fixedVersion": "17134.285",
      "fix": "KB4457128",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457128",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.285",
      "fix": "KB4457128",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457128",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.17976",
      "fix": "KB4457132",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457132",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.17976",
      "fix": "KB4457132",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457132",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457144",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457144",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457145",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457145",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457144",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457144",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457145",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457145",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4457129",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457129",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4457143",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457143",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4457129",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457129",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4457143",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457143",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows RT 8.1",
      "fixedVersion": "",
      "fix": "KB4457129",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457129",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457144",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457144",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457145",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457145",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457144",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457144",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457145",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457145",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457144",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457144",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457145",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457145",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457984",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457984",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4458010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4458010",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457984",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457984",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4458010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4458010",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457984",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457984",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4458010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4458010",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457984",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457984",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4458010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4458010",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457984",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457984",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4458010",
      "url": "https://patchblox.com/security/fix/microsoft/kb4458010",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4457135",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457135",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4457140",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457140",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457135",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457135",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457140",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457140",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4457129",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457129",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4457143",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457143",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457129",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457129",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4457143",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457143",
      "released": "2018-09-11T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.2485",
      "fix": "KB4457131",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457131",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.2485",
      "fix": "KB4457131",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457131",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1709  (Server Core Installation)",
      "fixedVersion": "16299.665",
      "fix": "KB4457142",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457142",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.285",
      "fix": "KB4457128",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457128",
      "released": "2018-09-11T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}