CVE-2026-34347: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-34347) involves a use-after-free condition in the Windows Win32K GRFX subsystem on Windows 10 Version 1607. Exploitation requires local access with low privileges and no user interaction. Successful exploitation could result in elevation of privileges, compromising system confidentiality, integrity, and availability. Microsoft has published an official security update to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher-level access to the system. This could lead to full compromise of the affected Windows 10 Version 1607 system, impacting confidentiality, integrity, and availability of system resources.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34347 to remediate this vulnerability. No additional mitigation steps are indicated in the vendor advisory.
CVE-2026-34347: CWE-416: Use After Free in Microsoft Windows 10 Version 1607
Description
Use after free in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-34347) involves a use-after-free condition in the Windows Win32K GRFX subsystem on Windows 10 Version 1607. Exploitation requires local access with low privileges and no user interaction. Successful exploitation could result in elevation of privileges, compromising system confidentiality, integrity, and availability. Microsoft has published an official security update to remediate this vulnerability.
Potential Impact
An authorized local attacker could exploit this use-after-free vulnerability to elevate their privileges, potentially gaining higher-level access to the system. This could lead to full compromise of the affected Windows 10 Version 1607 system, impacting confidentiality, integrity, and availability of system resources.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34347 to remediate this vulnerability. No additional mitigation steps are indicated in the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.447Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34347","vendor":"Microsoft"}]
Threat ID: 6a036540cbff5d861008c493
Added to database: 5/12/2026, 5:37:04 PM
Last enriched: 5/12/2026, 7:22:19 PM
Last updated: 5/13/2026, 4:49:14 AM
Views: 2
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