Executive brief
A security vulnerability exists in the Windows USB Print Driver, which manages how the operating system communicates with USB-connected printers. 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 bypass security restrictions, access sensitive data, or install malicious software.
Technical details
This vulnerability is a race condition (CWE-362) leading to a use-after-free (CWE-416) condition within the Windows USB Print Driver. An attacker with low-privileged local access can exploit improper synchronization during concurrent execution using shared resources. Successful exploitation allows the attacker to elevate privileges, potentially gaining SYSTEM-level access. The attack requires high complexity due to the timing requirements of the race condition, but no user interaction is required. Microsoft has released security updates to address this issue across affected Windows 11 and Windows Server 2025 versions.
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: Initial publication by Microsoft and NVD
- 2026-07-14: advisory