CVE-2026-56176
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
An out-of-bounds read vulnerability in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.
Risk Assessment
An attacker could gain higher privileges on the system, potentially leading to full device compromise.
Recommendation
Install the latest security updates from Microsoft for Windows.
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-2026-34331High
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.
- CVE-2025-26687High
A use after free vulnerability in Windows Win32K - GRFX allows an unauthorized attacker to elevate privileges over a network.
- 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)
Out-of-bounds read in Windows Win32K - GRFX allows an authorized attacker to elevate privileges locally.