Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-40403

Heap-based buffer overflow in Windows Win32K - GRFX allows an authorized attacker to execute code locally.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 4.5%
CVSS Severity
CVSS v3 Score 8.8
Products affected by CVE-2026-40403


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