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CVE-2019-1458

Microsoft Win32k Privilege Escalation Vulnerability

  • High 7.8
  • Exploited: added to CISA KEV 10 Jan 2022
  • Used in ransomware campaigns

Description

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka 'Win32k Elevation of Privilege Vulnerability'.

Key facts

Published
10 Dec 2019
Last changed
12 Aug 2026
Assigned by
microsoft
KEV added
10 Jan 2022
KEV fix due
10 Jul 2022
Used in ransomware
Yes, according to CISA
EPSS
74.438% likely to be exploited in the next 30 days, higher than 99.5% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: no; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 7.8CVSS 3.1, Highfrom CISA (ADP container)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What to do

  • Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
MicrosoftWindows
  • 10 for 32-bit Systems (affected)
  • 10 for x64-based Systems (affected)
  • 10 Version 1607 for 32-bit Systems (affected)
  • 10 Version 1607 for x64-based Systems (affected)
  • 7 for 32-bit Systems Service Pack 1 (affected)
  • 7 for x64-based Systems Service Pack 1 (affected)
  • 8.1 for 32-bit systems (affected)
  • 8.1 for x64-based systems (affected)
  • RT 8.1 (affected)
MicrosoftWindows Server
  • 2016 (affected)
  • 2016 (Core installation) (affected)
  • 2008 for 32-bit Systems Service Pack 2 (affected)
  • 2008 for 32-bit Systems Service Pack 2 (Core installation) (affected)
  • 2008 for Itanium-Based Systems Service Pack 2 (affected)
  • 2008 for x64-based Systems Service Pack 2 (affected)
  • 2008 for x64-based Systems Service Pack 2 (Core installation) (affected)
  • 2008 R2 for Itanium-Based Systems Service Pack 1 (affected)
  • 2008 R2 for x64-based Systems Service Pack 1 (affected)
  • 2008 R2 for x64-based Systems Service Pack 1 (Core installation) (affected)
  • 2012 (affected)
  • 2012 (Core installation) (affected)
  • 2012 R2 (affected)
  • 2012 R2 (Core installation) (affected)

Timeline

  1. 10 Dec 2019 Published
  2. 10 Jan 2022 CVE-2019-1458 added to CISA KEV
  3. 10 Jan 2022 Added to the CISA KEV catalogue

References