---
id: CVE-2023-21748
title: Windows Kernel Elevation of Privilege Vulnerability
summary: Windows Kernel 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_1607
affected:
  - windows_10_1607
  - windows_10_1809
  - windows_10_20h2
  - windows_10_21h2
  - windows_10_22h2
  - windows_11_21h2
  - windows_11_22h2
  - 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
  - windows_server_2019
  - windows_server_2022
published: '2023-01-10'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T22:17:11.723'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2023-21748'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21748'
    label: secure@microsoft.com
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21748'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2025-04-12T03:55:11.966033Z'
epss: 0.00849
epssPercentile: 0.58242
ingestedAt: '2026-11-05T06:38:03.557Z'
---

## Overview

Windows Kernel Elevation of Privilege Vulnerability

## Affected

- `windows_10_1607`
- `windows_10_1809`
- `windows_10_20h2`
- `windows_10_21h2`
- `windows_10_22h2`
- `windows_11_21h2`
- `windows_11_22h2`
- `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`
- `windows_server_2019`
- `windows_server_2022`

## Remediation

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