CVE-2026-69335: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
CVE-2026-69335 is a high-severity use-after-free vulnerability in the Windows Win32K component affecting Windows 10 Version 1607 and other specified builds. It allows an authorized local attacker to elevate privileges. The vulnerability has an official fix 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
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, identified as CVE-2026-69335 and classified under CWE-416 (Use After Free), exists in the Windows Win32K subsystem. It allows a local attacker with limited privileges to elevate their privileges by exploiting a use-after-free condition. The affected versions include multiple Windows 10 builds starting from version 1607 and later updates, up to but not including specific patch versions where the issue is fixed. The CVSS v3.1 base score is 7.0, indicating high severity, with attack vector local, high attack complexity, low privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. Microsoft has issued an official fix for this vulnerability.
Potential Impact
An authorized local attacker can exploit this use-after-free vulnerability to elevate privileges on affected Windows 10 systems. This could allow the attacker to gain higher-level access than intended, potentially compromising system confidentiality, integrity, and availability.
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 to remediate this vulnerability. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T20:49:42.868Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69335","vendor":"Microsoft"}]
Threat ID: 6aa044e6acd9273b49fa7e57
Added to database: 09/08/2026, 17:24:54 UTC
Last enriched: 10/16/2026, 21:04:10 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 20
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