CVE-2026-34331: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves a race condition (CWE-362) in the Windows Win32K GRFX subsystem on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The flaw affects the graphics component of the OS and could lead to full compromise of confidentiality, integrity, and availability on the affected system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected Windows 10 Version 1607 system. Successful exploitation could result in complete system compromise, impacting confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the available security update as soon as possible to remediate the issue. Patch status is confirmed by the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34331.
CVE-2026-34331: CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in Microsoft Windows 10 Version 1607
Description
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the Windows Win32K GRFX subsystem on Windows 10 Version 1607 (build 10.0.14393.0). Improper synchronization during concurrent execution of shared resources can be exploited by an authorized local attacker to elevate privileges. The flaw affects the graphics component of the OS and could lead to full compromise of confidentiality, integrity, and availability on the affected system. Microsoft has published an official fix to remediate this vulnerability.
Potential Impact
An authorized local attacker can exploit this race condition to elevate their privileges on the affected Windows 10 Version 1607 system. Successful exploitation could result in complete system compromise, impacting confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the available security update as soon as possible to remediate the issue. Patch status is confirmed by the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34331.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-26T21:02:16.445Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-34331","vendor":"Microsoft"}]
Threat ID: 6a03653ccbff5d861008c3dc
Added to database: 5/12/2026, 5:37:00 PM
Last enriched: 5/12/2026, 7:23:50 PM
Last updated: 5/13/2026, 4:58:36 AM
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.