Executive brief
A security vulnerability exists in the Windows USB Print Driver, which manages communication between the computer and USB-connected printers. An attacker who already has basic access to a system could exploit this flaw to gain full administrative control. This could allow them to bypass security restrictions, access sensitive files, or install malicious software.
Technical details
A race condition (CWE-362) exists in the Windows USB Print Driver due to improper synchronization when handling shared resources. This flaw can lead to a use-after-free (CWE-416) condition. An authorized attacker with low privileges can exploit this vulnerability locally, though the attack complexity is high due to the timing requirements of the race condition. Successful exploitation allows the attacker to elevate privileges to SYSTEM. Microsoft has released security updates to address this issue across affected versions of Windows 11 and Windows Server 2025.
Affected products
- Microsoft Windows 11 Version 24H2 10.0.26100.0 to 10.0.26100.8875
- Microsoft Windows 11 Version 25H2 10.0.26200.0 to 10.0.26200.8875
- Microsoft Windows 11 version 26H1 10.0.28000.0 to 10.0.28000.2269
- Microsoft Windows Server 2025 10.0.26100.0 to 10.0.26100.33158
Timeline
- 2026-07-14: disclosed
- 2026-07-14: advisory