CVE-2026-68840: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
CVE-2026-68840 is a race condition vulnerability in the Windows USB Driver affecting multiple versions of Microsoft Windows 10, including Version 1607. This flaw allows an authorized local attacker to elevate privileges due to improper synchronization when concurrently accessing shared resources. The vulnerability has a high severity rating with a CVSS score of 7. An official fix is available from Microsoft.
CVSS v3.1
Score 7.0high
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
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
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows USB Driver where concurrent execution using a shared resource is improperly synchronized. An authorized local attacker can exploit this flaw to elevate privileges on affected Windows 10 versions. The issue impacts several Windows 10 builds starting from version 10.0.14393.0 up to but excluding various patched builds such as 10.0.14393.9512 and others. Microsoft has published an official fix addressing this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights than intended. This can lead to full system compromise depending on the privileges escalated. The vulnerability affects confidentiality, integrity, and availability (all rated high in the CVSS vector).
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as listed in the vendor advisory. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-31T16:47:02.144Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68840","vendor":"Microsoft"}]
Threat ID: 6aa044d4acd9273b49fa7c61
Added to database: 09/08/2026, 17:24:36 UTC
Last enriched: 10/16/2026, 20:54:45 UTC
Last updated: 10/22/2026, 01:15:25 UTC
Views: 21
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