Executive brief
A vulnerability in the Windows Kernel could allow an individual with physical access to a computer to gain full administrative control. By exploiting a memory handling error, an attacker can bypass standard security restrictions to access sensitive data or disrupt system operations. This risk is primarily relevant for lost or stolen devices and hardware in public or unsecured locations.
Technical details
A heap-based buffer overflow exists in the Windows Kernel (CWE-122). The vulnerability is triggered via a physical attack vector, requiring the attacker to have direct physical access to the target hardware. Successful exploitation allows an unauthenticated attacker to elevate their privileges, potentially achieving full system compromise. The flaw affects multiple versions of Windows 10, Windows 11, and Windows Server 2016. Microsoft has released security updates to address this issue.
Affected products
- Microsoft Windows 10 1607, 1809, 21H2, 22H2
- Microsoft Windows 11 24H2, 25H2, 26H1
- Microsoft Windows Server 2016 All versions
Timeline
- 2026-07-14: disclosed: Initial publication by Microsoft and NVD
- 2026-07-14: advisory