CVE-2026-34331
HighSummary
There is a concurrent execution issue in Windows Win32K - GRFX due to improper synchronization, leading to a race condition. This allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker with local privileges can exploit this vulnerability to gain higher privileges, posing a significant security risk to the system.
Recommendation
It is recommended to update Windows to the latest version to mitigate this vulnerability and to monitor the system for unauthorized activities.
Other vulnerabilities in Windows Win32K - GRFX
See all- CVE-2026-40403High
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
- CVE-2026-34333High
A use after free vulnerability in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
- CVE-2025-26687High
A use after free vulnerability in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a network.
- CVE-2026-56176High
An out-of-bounds read vulnerability in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
- CVE-2026-44812High
An integer overflow vulnerability in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
- CVE-2026-44803High
An integer overflow vulnerability in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.
- CVE-2026-33104High
A race condition in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally via concurrent execution of a shared resource without proper synchronization.
Original NVD description (English source)
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.