CVE-2025-55228
vulnerability analysis and mitigation

Overview

CVE-2025-55228 is a Critical remote code execution vulnerability affecting Windows Graphics Component, specifically in the Windows Win32K - GRFX component which is partially responsible for the Graphical user interface. The vulnerability was disclosed in September 2025 and has a CVSS score of 7.8 (NVD, CrowdStrike).

Technical details

The vulnerability stems from a race condition and use-after-free condition in Windows Win32K - GRFX. It requires high attack complexity and local access for exploitation. The CVSS score of 7.8 reflects a Critical severity with the following vector string: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H (NVD, CrowdStrike).

Impact

Successful exploitation of this vulnerability could allow an authenticated local attacker with low privileges to execute arbitrary code. If exploited from a low-privilege Hyper-V guest, attackers could potentially escape the virtualization boundary and execute code on the Hyper-V host system (CrowdStrike).

Mitigation and workarounds

Microsoft has released security patches as part of the September 2025 Patch Tuesday updates. System administrators are urged to apply these security updates promptly to protect their systems from potential exploitation (CrowdStrike).

Additional resources


SourceThis report was generated using AI

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