Executive brief
A security vulnerability has been identified in the Windows Win32K component, which manages graphics and windowing for the operating system. An attacker who already has basic access to a computer could exploit this flaw to gain full administrative control over the system. This could allow them to view sensitive data, install malicious software, or disrupt business operations.
Technical details
This vulnerability is classified as an improper access control issue (CWE-284) within the Windows Win32K kernel-mode driver. An attacker with local access and low-level privileges can exploit this flaw to elevate their permissions to SYSTEM level. The attack requires a local presence on the machine and is characterized by high complexity, suggesting specific timing or environmental conditions are necessary for a successful exploit. Microsoft has released security updates to address this issue across multiple versions of Windows 10, Windows 11, and Windows Server 2012.
Affected products
- Microsoft Windows 10 1607, 1809, 21H2, 22H2
- Microsoft Windows 11 24H2, 25H2, 26H1
- Microsoft Windows Server 2012 Standard and Server Core
Timeline
- 2026-07-14: disclosed
- 2026-07-14: advisory