All vulnerabilities
CVE-2020-1054

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32kOperating systems
Open in ThreatlineRecord JSON
CVSS
7.0High
ExploitationExploited in the wildAdded to KEV 3 Nov 2021CISA KEV
Exploit odds (EPSS)53.9%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline3 May 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 20 Feb 2020Exploit code publicMetasploit
  2. 21 May 2020, 22:52 UTCPublishedCVE List
  3. 3 Nov 2021Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Exploit moduleMicrosoft Windows DrawIconEx OOB Write Local Privilege Elevation 20 Feb 2020Metasploit

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 29

  • Windows 10 Version 1507affected: 10.0.10240.0 before publicationCVE List
  • Windows 10 Version 1607affected: 10.0.14393.0 before publicationCVE List
  • Windows 10 Version 1709affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1709 for 32-bit Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1803affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1809affected: 10.0.17763.0 before publicationCVE List
  • Windows 10 Version 1809affected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for 32-bit Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for ARM64-based Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1903 for x64-based Systemsaffected: 10.0.0 before publicationCVE List
  • Windows 10 Version 1909affected: 10.0.0 before publicationCVE List
  • Windows 7affected: 6.1.0 before publicationCVE List
  • Windows 7 Service Pack 1affected: 6.1.0 before publicationCVE List
  • Windows 8.1affected: 6.3.0 before publicationCVE List
  • Windows Server 2008 R2 Service Pack 1affected: 6.1.7601.0 before publicationCVE List
  • Windows Server 2008 R2 Service Pack 1 (Server Core installation)affected: 6.1.7601.0 before publicationCVE List
  • Windows Server 2008 Service Pack 2affected: 6.0.6003.0 before publicationCVE List
  • Windows Server 2008 Service Pack 2 (Server Core installation)affected: 6.0.6003.0 before publicationCVE List
  • Windows Server 2012affected: 6.2.9200.0 before publicationCVE List
  • Windows Server 2012 (Server Core installation)affected: 6.2.9200.0 before publicationCVE List
  • Windows Server 2012 R2affected: 6.3.9600.0 before publicationCVE List
  • Windows Server 2012 R2 (Server Core installation)affected: 6.3.9600.0 before publicationCVE List
  • Windows Server 2016affected: 10.0.14393.0 before publicationCVE List
  • Windows Server 2016 (Server Core installation)affected: 10.0.14393.0 before publicationCVE List
  • Windows Server 2019affected: 10.0.17763.0 before publicationCVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before publicationCVE List
  • Windows Server, version 1803 (Server Core Installation)affected: 10.0.0 before publicationCVE List
  • Windows Server, version 1903 (Server Core installation)affected: 10.0.0 before publicationCVE List
  • Windows Server, version 1909 (Server Core installation)affected: 10.0.0 before publicationCVE List

References 4