{
  "cveId": "CVE-2018-8421",
  "url": "https://patchblox.com/security/cve/CVE-2018-8421",
  "summary": "CVE-2018-8421 is fixed in 69 products on 1 platform, first by KB4457131, released September 11, 2018. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": ".NET Framework Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EA remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system.\u003C/p\u003E\n\u003Cp\u003ETo exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how .NET Framework processes input.\u003C/p\u003E",
  "published": "2018-09-12T07:00:00Z",
  "severity": "Critical",
  "epss": 0.29075,
  "epssPercentile": 0.98175,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2018-8421",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457054",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457054",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4457043",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457043",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on 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": "Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems",
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      "fix": "KB4457131",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457131",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
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      "fixedVersion": "15063.1324",
      "fix": "KB4457138",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457138",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on 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",
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      "fix": "KB4457142",
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      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
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      "fix": "KB4457142",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457142",
      "released": "2018-09-11T00:00:00Z"
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    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems",
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      "fix": "KB4457128",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457128",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
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      "url": "https://patchblox.com/security/fix/microsoft/kb4457128",
      "released": "2018-09-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on 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"
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      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on 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": "Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4457045",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457045",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4457056",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457056",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4457045",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457045",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4457056",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457056",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012",
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      "fix": "KB4457053",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457053",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4457042",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457042",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)",
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      "fix": "KB4457053",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457053",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)",
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      "fix": "KB4457042",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457042",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 R2",
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      "fix": "KB4457045",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457045",
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      "platform": "microsoft",
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      "released": "2018-09-12T07:00:00Z"
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    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)",
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      "fix": "KB4457045",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457045",
      "released": "2018-09-12T07:00:00Z"
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      "product": "Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)",
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      "url": "https://patchblox.com/security/fix/microsoft/kb4457056",
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      "released": "2018-09-11T00:00:00Z"
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      "released": "2018-09-11T00:00:00Z"
    },
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      "released": "2018-09-12T07:00:00Z"
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      "released": "2018-09-12T07:00:00Z"
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    {
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      "released": "2018-09-12T07:00:00Z"
    },
    {
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      "product": "Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
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      "url": "https://patchblox.com/security/fix/microsoft/kb4457044",
      "released": "2018-09-12T07:00:00Z"
    },
    {
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      "product": "Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
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      "released": "2018-09-12T07:00:00Z"
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      "platform": "microsoft",
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      "url": "https://patchblox.com/security/fix/microsoft/kb4457038",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4457030",
      "url": "https://patchblox.com/security/fix/microsoft/kb4457030",
      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
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      "released": "2018-09-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1",
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      "released": "2018-09-12T07:00:00Z"
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    {
      "platform": "microsoft",
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      "fixedVersion": "",
      "fix": "KB4457036",
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      "released": "2018-09-12T07:00:00Z"
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    {
      "platform": "microsoft",
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    {
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      "released": "2018-09-12T07:00:00Z"
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    {
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    {
      "platform": "microsoft",
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      "released": "2018-09-12T07:00:00Z"
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    {
      "platform": "microsoft",
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      "fix": "KB4457029",
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      "platform": "microsoft",
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      "platform": "microsoft",
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