VULNERABILITY INTELLIGENCE

CVE-2026-40403

CVSS score8.8 HIGH
EPSS probability0.43%
CISA KEVNot currently listed
Published2026-05-12
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Description

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.

Weakness classification

  • CWE-122: Heap-based Buffer Overflow

Primary references