CVE-2025-30388

HIGH

Microsoft Windows Win32K - GRFX Heap-based Buffer Overflow

Title source: llm

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

Core 1

Core References

Vendor Advisory vendor-advisory patch

CVSS v3 7.8

EPSS 0.0079

EPSS Percentile 74.0%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-122 CWE-787

Status published

Products (20)

microsoft/office < 16.0.14326.22502

microsoft/office < 16.0.18827.20000

microsoft/office_long_term_servicing_channel 2021

microsoft/office_long_term_servicing_channel 2024

microsoft/windows_10_1507 < 10.0.10240.21014

microsoft/windows_10_1607 < 10.0.14393.8066

microsoft/windows_10_1809 < 10.0.17763.7314 (2 CPE variants)

microsoft/windows_10_21h2 < 10.0.19044.5854

microsoft/windows_10_22h2 < 10.0.19045.5854

microsoft/windows_11_22h2 < 10.0.22621.5335

... and 10 more

Published May 13, 2025

Tracked Since Feb 18, 2026