CVE-2026-40403
HIGH
NVD
CVSS Score
8.8
Severity
HIGH
Published
May 12, 2026
Vendor
unknown
Description
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.