---
id: CVE-2019-1458
title: >-
  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'.
summary: >-
  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'.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
vendor: microsoft
product: windows_10_1507
affected:
  - windows_10_1507
  - windows_10_1607
  - windows_7
  - windows_8.1
  - windows_rt_8.1
  - windows_server_2008
  - windows_server_2008 = r2
  - windows_server_2012
  - windows_server_2012 = r2
  - windows_server_2016
published: '2019-12-10'
updated: '2026-08-12'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2019-1458'
references:
  - url: >-
      http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
    label: secure@microsoft.com
  - url: >-
      http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
    label: secure@microsoft.com
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
    label: secure@microsoft.com
  - url: >-
      http://packetstormsecurity.com/files/156651/Microsoft-Windows-WizardOpium-Local-Privilege-Escalation.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      http://packetstormsecurity.com/files/159569/Microsoft-Windows-Uninitialized-Variable-Local-Privilege-Escalation.html
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1458
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-1458
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
  - exploit-available
epss: 0.74263
epssPercentile: 0.99467
kev: true
kevDateAdded: '2022-01-10'
kevDueDate: '2022-07-10'
kevRansomware: true
exploited: true
exploitAvailable: true
zeroDay: true
ingestedAt: '2026-08-12T05:52:07.325Z'
exploits:
  exploitdb: true
  github: 2
  githubRepos:
    - 'https://github.com/piotrflorczyk/cve-2019-1458_POC'
    - 'https://github.com/rip1s/CVE-2019-1458'
  metasploit:
    - exploit/windows/local/cve_2019_1458_wizardopium
  checkedAt: '2026-09-23T07:13:15.736Z'
---

## Overview

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'.

## Affected

- `windows_10_1507`
- `windows_10_1607`
- `windows_7`
- `windows_8.1`
- `windows_rt_8.1`
- `windows_server_2008`
- `windows_server_2008 = r2`
- `windows_server_2012`
- `windows_server_2012 = r2`
- `windows_server_2016`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.