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Findings

CVE-2020-1054

Microsoft Win32k Privilege Escalation Vulnerability

Published May 21, 2020 · updated Oct 8, 2026 · microsoft windows 10 1507

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. 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 of an affected system. The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 21, 2020 · Catalog

    Detected

    An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. 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 wou

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Oct 8, 2026 · Catalog

    Updated

    An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. 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 wou

Required action

Apply updates per vendor instructions.

CISA due date May 3, 2022

Affected

  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows 10 1709version unspecified
  • cpe microsoft/windows 10 1803version unspecified
  • vendor Microsoft Win32kversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2020-1054

    Microsoft Win32k contains a privilege escalation vulnerability when the Windows kernel-mode driver fails to properly handle objects in memory. Successful exploitation allows an attacker to execute code in kernel mode.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-1054

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-1054

    30-day exploitation probability 54.2%

    first.org
  • Metasploit ModulesPublic exploit moduleexploit_windows/local/cve_2020_1054_drawiconex_lpe

    Public module reference (normal). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDVulnerability recordCVE-2020-1054

    An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; vi

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/160515/Microsoft-Windows-DrawIconEx-Local-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References