All vulnerabilities
CVE-2022-21882

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32kOperating systems
Open in ThreatlineRecord JSON
CVSS
7.0High
ExploitationExploited in the wildAdded to KEV 4 Feb 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)59.2%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in10.0.17763.2452Also 10.0.18363.2037, 10.0.19043.1466 and 4 moreCVE List
Federal deadline18 Feb 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

  • 10.0.17763.2452Windows 10 Version 1809CVE List
  • 10.0.17763.2452Windows Server 2019CVE List
  • 10.0.17763.2452Windows Server 2019 (Server Core installation)CVE List
  • 10.0.18363.2037Windows 10 Version 1909CVE List
  • 10.0.19043.1466Windows 10 Version 21H1CVE List
  • 10.0.20348.469Windows Server 2022CVE List
Show all 10 fixed versions
  • 10.0.19042.1466Windows 10 Version 20H2CVE List
  • 10.0.19042.1466Windows Server version 20H2CVE List
  • 10.0.22000.434Windows 11 version 21H2CVE List
  • 10.0.19044.1466Windows 10 Version 21H2CVE List

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Timeline

  1. 9 Feb 2021Exploit code publicMetasploit
  2. 11 Jan 2022, 20:22 UTCPublishedCVE List
  3. 4 Feb 2022Added to CISA KEVCISA KEV

Public exploit code and templates 1

  • Exploit moduleWin32k ConsoleControl Offset Confusion 9 Feb 2021Metasploit

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

Description

Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.

Text from CVE List

Affected versions 11

  • Windows 10 Version 1809affected: 10.0.17763.0 before 10.0.17763.2452CVE List
  • Windows 10 Version 1809affected: 10.0.0 before 10.0.17763.2452CVE List
  • Windows Server 2019affected: 10.0.17763.0 before 10.0.17763.2452CVE List
  • Windows Server 2019 (Server Core installation)affected: 10.0.17763.0 before 10.0.17763.2452CVE List
  • Windows 10 Version 1909affected: 10.0.0 before 10.0.18363.2037CVE List
  • Windows 10 Version 21H1affected: 10.0.0 before 10.0.19043.1466CVE List
  • Windows Server 2022affected: 10.0.20348.0 before 10.0.20348.469CVE List
  • Windows 10 Version 20H2affected: 10.0.0 before 10.0.19042.1466CVE List
  • Windows Server version 20H2affected: 10.0.0 before 10.0.19042.1466CVE List
  • Windows 11 version 21H2affected: 10.0.0 before 10.0.22000.434CVE List
  • Windows 10 Version 21H2affected: 10.0.19043.0 before 10.0.19044.1466CVE List

References 4