---
id: CVE-2026-69799
title: >-
  Concurrent execution using shared resource with improper synchronization
  ('race condition') in Windows Hello allows an authorized attacker to elevate
  privileges locally.
summary: >-
  Concurrent execution using shared resource with improper synchronization
  ('race condition') in Windows Hello allows an authorized attacker to elevate
  privileges locally.
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-362
vendor: Microsoft
product: Windows 10 Version 21H2
affected:
  - windows_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7725
  - windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19045.7725
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7582
  - windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7582
  - windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9445
  - windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9445
  - windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2954
published: '2026-09-08'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T10:20:10.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69799'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69799'
    label: secure@microsoft.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-09T04:24:08.933021Z'
ingestedAt: '2026-09-08T19:08:49.620Z'
epss: 0.00186
epssPercentile: 0.08437
---

## Overview

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hello allows an authorized attacker to elevate privileges locally.

## Remediation

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