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High severity7.8NVD Advisory· Published May 21, 2020· Updated Aug 19, 2026

CVE-2020-1154

CVE-2020-1154

Description

An elevation of privilege vulnerability exists when the Windows Common Log File System (CLFS) driver improperly handles objects in memory. An attacker who successfully exploited this vulnerability could run processes in an elevated context. To exploit the vulnerability, an attacker would first have to log on to the system, and then run a specially crafted application to take control over the affected system. The security update addresses the vulnerability by correcting how CLFS handles objects in memory.

Affected products

31
  • Microsoft/Windows Server 2003cpe-rescue
    Range: version 1803 (Core Installation)
  • Microsoft/Windows Common Log File System Driverllm-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 19097 versions
    cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*+ 6 more
    • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
    • 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 7
    cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
  • Microsoft/Windows 8.1
    cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*
  • Microsoft/Windows Rt 8.1
    cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
  • Microsoft/Windows Server 20083 versions
    cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
    • 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 20164 versions
    cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*+ 3 more
    • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2019
    cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

2

News mentions

0

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