All vulnerabilities
CVE-2019-1458

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32kOperating systems
Open in ThreatlineRecord JSON
CVSS
7.8High
ExploitationExploited in the wildAdded to KEV 10 Jan 2022. Known ransomware useCISA KEV
Exploit odds (EPSS)74.4%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 deadline10 Jul 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. 10 Dec 2019Exploit code publicMetasploit
  2. 10 Dec 2019, 21:40 UTCPublishedCVE List
  3. 10 Jan 2022Added to CISA KEVCISA KEV

Public exploit code and templates 2

  • Exploit moduleMicrosoft Windows Uninitialized Variable Local Privilege Elevation 10 Dec 2019Metasploit
  • Local exploitMicrosoft Windows - 'WizardOpium' Local Privilege Escalation 3 Mar 2020Exploit-DB

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

Description

A privilege escalation vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k EoP.

Text from CVE List

Affected versions 23

  • Windowsaffected: 10 for 32-bit SystemsCVE List
  • Windowsaffected: 10 for x64-based SystemsCVE List
  • Windowsaffected: 10 Version 1607 for 32-bit SystemsCVE List
  • Windowsaffected: 10 Version 1607 for x64-based SystemsCVE List
  • Windowsaffected: 7 for 32-bit Systems Service Pack 1CVE List
  • Windowsaffected: 7 for x64-based Systems Service Pack 1CVE List
  • Windowsaffected: 8.1 for 32-bit systemsCVE List
  • Windowsaffected: 8.1 for x64-based systemsCVE List
  • Windowsaffected: RT 8.1CVE List
  • Windows Serveraffected: 2016CVE List
  • Windows Serveraffected: 2016 (Core installation)CVE List
  • Windows Serveraffected: 2008 for 32-bit Systems Service Pack 2CVE List
  • Windows Serveraffected: 2008 for 32-bit Systems Service Pack 2 (Core installation)CVE List
  • Windows Serveraffected: 2008 for Itanium-Based Systems Service Pack 2CVE List
  • Windows Serveraffected: 2008 for x64-based Systems Service Pack 2CVE List
  • Windows Serveraffected: 2008 for x64-based Systems Service Pack 2 (Core installation)CVE List
  • Windows Serveraffected: 2008 R2 for Itanium-Based Systems Service Pack 1CVE List
  • Windows Serveraffected: 2008 R2 for x64-based Systems Service Pack 1CVE List
  • Windows Serveraffected: 2008 R2 for x64-based Systems Service Pack 1 (Core installation)CVE List
  • Windows Serveraffected: 2012CVE List
  • Windows Serveraffected: 2012 (Core installation)CVE List
  • Windows Serveraffected: 2012 R2CVE List
  • Windows Serveraffected: 2012 R2 (Core installation)CVE List

References 3