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High severity8.5NVD Advisory· Published May 21, 2020· Updated Aug 19, 2026

CVE-2020-1112

CVE-2020-1112

Description

An 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. To 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. The security update addresses the vulnerability by correcting how Windows BITS validates file names.

Affected products

34
  • Microsoft/Windows Server 2003cpe-rescue
    Range: version 1803 (Core Installation)
  • Microsoft/Windows Background Intelligent Transfer Service (BITS)llm-fuzzy
  • Microsoft/Windowsv5
    Range: 10 Version 1803 for 32-bit Systems
  • Microsoft/Windows 10 Version 1909 for 32-bit Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1909 for x64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1909 for ARM64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows Server, version 1909 (Server Core installation)v5
    Range: unspecified
  • Microsoft/Windows 10 Version 1903 for 32-bit Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1903 for x64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1903 for ARM64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows Server, version 1903 (Server Core installation)v5
    Range: unspecified
  • Microsoft/Windows 10 19099 versions
    cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*+ 8 more
    • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:*
    • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:*
    • cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*
  • Microsoft/Windows 72 versions
    cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:*+ 1 more
    • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:*
  • Microsoft/Windows 8.12 versions
    cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*+ 1 more
    • cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:*
  • Microsoft/Windows Rt 8.1
    cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • Microsoft/Windows Server 20085 versions
    cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:itanium:*+ 4 more
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:itanium:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
    • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*
    • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • Microsoft/Windows Server 20122 versions
    cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2016
    cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2019
    cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

2

News mentions

0

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