CVE-2026-69687: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 10 Version 1607
Description
CVE-2026-69687 is a high-severity integer underflow vulnerability in the Windows USB Audio Class driver (usbaudio.sys) affecting multiple versions of Microsoft Windows 10, including Version 1607. This flaw allows an authorized local attacker to elevate privileges. The vulnerability has been officially fixed by Microsoft.
CVSS v3.1
Score 7.8high
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
Microsoft
Windows Server 2012 (Server Core installation)
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 an integer underflow (wrap or wraparound) in the Windows USB Audio Class driver (usbaudio.sys). An authorized local attacker can exploit this flaw to elevate privileges on affected Windows 10 systems. The issue affects multiple Windows 10 builds starting from version 10.0.14393.0 up to but excluding various fixed builds, as well as some Windows 8.1 versions. Microsoft has released official fixes addressing this vulnerability.
Potential Impact
Successful exploitation allows an authorized local attacker to elevate privileges, potentially gaining higher system rights. The CVSS v3.1 score is 7.8 (high), indicating significant confidentiality, integrity, and availability impacts.
Mitigation Recommendations
Microsoft has released official fixes for this vulnerability. Users and administrators should apply the security updates provided by Microsoft to affected Windows 10 versions to remediate the issue. No additional mitigation actions are required beyond applying the official patches.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T21:28:58.728Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69687","vendor":"Microsoft"}]
Threat ID: 6aa0451dacd9273b49fa97e4
Added to database: 09/08/2026, 17:25:49 UTC
Last enriched: 10/16/2026, 21:28:17 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 30
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