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High severity7.0NVD Advisory· Published May 21, 2020· Updated Aug 19, 2026

CVE-2020-1121

CVE-2020-1121

Description

An elevation of privilege vulnerability exists when Windows improperly handles calls to Clipboard Service. An 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. To 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. The update addresses the vulnerability by correcting how Windows handles calls to Clipboard Service.

Affected products

17
  • Microsoft/Windows 10 19093 versions
    cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*+ 2 more
    • 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 Server 20193 versions
    cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*+ 2 more
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2019:1903:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2019:1909:*:*:*:*:*:*:*
  • Microsoft/Windowsllm-fuzzy2 versions
    (expand)+ 1 more
    • (no CPE)
    • (no CPE)range: 10 Version 1809 for 32-bit Systems
  • Microsoft/Windows 10 Version 1903 for 32-bit Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1903 for ARM64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1903 for x64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1909 for 32-bit Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1909 for ARM64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows 10 Version 1909 for x64-based Systemsv5
    Range: unspecified
  • Microsoft/Windows Server 2003cpe-rescue
    Range: 2019
  • Microsoft/Windows Server, version 1903 (Server Core installation)v5
    Range: unspecified
  • Microsoft/Windows Server, version 1909 (Server Core installation)v5
    Range: unspecified

Patches

Vulnerability mechanics

References

2

News mentions

0

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