CVE-2026-69710: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 21H2
Description
CVE-2026-69710 is a race condition vulnerability in Windows Hello on Microsoft Windows 10 Version 21H2 and related builds. It allows a locally authorized attacker to elevate privileges due to improper synchronization of shared resources during concurrent execution. The vulnerability has a high severity with a CVSS score of 7.5. An official fix is available from Microsoft.
CVSS v3.1
Score 7.5high
Affected software
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-69710) involves a race condition (CWE-362) in Windows Hello on Windows 10 Version 21H2 and other specified builds. The flaw arises from improper synchronization when multiple threads access shared resources concurrently, enabling an authorized local attacker to elevate privileges. The CVSS 3.1 vector indicates the attack requires local access with high attack complexity and high privileges but no user interaction. The impact includes complete confidentiality, integrity, and availability compromise. Microsoft has published an official fix for this issue.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected Windows 10 systems. This could lead to full system compromise, including complete control over confidentiality, integrity, and availability of the system.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the available security updates as provided in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69710 to remediate this issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:35:55.263Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69710","vendor":"Microsoft"}]
Threat ID: 6aa04522acd9273b49fa9865
Added to database: 09/08/2026, 17:25:54 UTC
Last enriched: 10/16/2026, 21:29:20 UTC
Last updated: 10/23/2026, 01:15:26 UTC
Views: 41
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