{
  "cveId": "CVE-2020-1112",
  "url": "https://patchblox.com/security/cve/CVE-2020-1112",
  "summary": "CVE-2020-1112 is fixed in 41 products on 1 platform, first by KB4556813, released May 12, 2020. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Windows Background Intelligent Transfer Service Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EAn elevation of privilege vulnerability exists when the Windows Background Intelligent Transfer Service (BITS) IIS module improperly handles uploaded content. An attacker who successfully exploited this vulnerability could upload restricted file types to an IIS-hosted folder.\u003C/p\u003E\n\u003Cp\u003ETo exploit this vulnerability, an attacker would require permissions to upload files via BITS. An attacker could then submit a specially crafted request to upload a file.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by correcting how Windows BITS validates file names.\u003C/p\u003E",
  "published": "2020-05-12T07:00:00Z",
  "severity": "Important",
  "cvss": 8.5,
  "epss": 0.03293,
  "epssPercentile": 0.8857,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1112",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.3686",
      "fix": "KB4556813",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556813",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.3686",
      "fix": "KB4556813",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556813",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for 32-bit Systems",
      "fixedVersion": "16299.1868",
      "fix": "KB4556812",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556812",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for ARM64-based Systems",
      "fixedVersion": "16299.1868",
      "fix": "KB4556812",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556812",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for x64-based Systems",
      "fixedVersion": "16299.1868",
      "fix": "KB4556812",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556812",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for 32-bit Systems",
      "fixedVersion": "17134.1488",
      "fix": "KB4556807",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556807",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for ARM64-based Systems",
      "fixedVersion": "17134.1488",
      "fix": "KB4556807",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556807",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.1488",
      "fix": "KB4556807",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556807",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.1217",
      "fix": "KB4551853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4551853",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for ARM64-based Systems",
      "fixedVersion": "17763.1217",
      "fix": "KB4551853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4551853",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.1217",
      "fix": "KB4551853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4551853",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.18575",
      "fix": "KB4556826",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556826",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.18575",
      "fix": "KB4556826",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556826",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556836",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556836",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556843",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556843",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556836",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556836",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556843",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556843",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4556853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556853",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4556846",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556846",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4556853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556853",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4556846",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556846",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows RT 8.1",
      "fixedVersion": "",
      "fix": "KB4556846",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556846",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556836",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556836",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4556843",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556843",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556836",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556836",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556843",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556843",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4556860",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556860",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4556854",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556854",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556860",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556860",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556854",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556854",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4556860",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556860",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4556854",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556854",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556860",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556860",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556854",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556854",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4556852",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556852",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4556840",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556840",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556852",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556852",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556840",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556840",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4556853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556853",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4556846",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556846",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556853",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556846",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556846",
      "released": "2020-05-12T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.3686",
      "fix": "KB4556813",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556813",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.3686",
      "fix": "KB4556813",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556813",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.1217",
      "fix": "KB4551853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4551853",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.1217",
      "fix": "KB4551853",
      "url": "https://patchblox.com/security/fix/microsoft/kb4551853",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.1488",
      "fix": "KB4556807",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556807",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4556799",
      "url": "https://patchblox.com/security/fix/microsoft/kb4556799",
      "released": "2020-05-12T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}