CVE-2026-44812

Analyzed Analyzed - Analysis Complete

Integer Overflow in Windows Win32K - GRFX

Publication date: 2026-06-09

Last updated on: 2026-06-19

Assigner: Microsoft Corporation

Description

Integer overflow or wraparound in Windows Win32K - GRFX allows an unauthorized attacker to execute code locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-06-09

Last Modified

2026-06-19

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-44812

EUVD

EUVD-2026-35759

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_win32k_grfx	*
microsoft	windows_win32k	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-190	The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Attack-Flow Graph

Mitigation Strategies

To mitigate this vulnerability, apply the security updates provided by Microsoft as soon as possible to patch the integer overflow issue in Windows Win32K - GRFX.

Additionally, limit local user access and avoid running untrusted applications to reduce the risk of exploitation.

Executive Summary

This vulnerability is an integer overflow or wraparound issue in the Windows Win32K graphics component (GRFX). It allows an unauthorized attacker to execute code locally on the affected system.

Impact Analysis

The vulnerability can lead to local code execution by an unauthorized attacker, which means the attacker could run malicious code on your system. This can result in full compromise of confidentiality, integrity, and availability of the affected system.

Compliance Impact

The provided information does not specify how CVE-2026-44812 affects compliance with common standards and regulations such as GDPR or HIPAA.

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