Executive brief
A security vulnerability has been identified in several versions of Microsoft Windows and Windows Server. This flaw allows a user who already has basic access to a computer to gain higher-level administrative privileges. If exploited, an attacker could take full control of the system, potentially leading to the theft of sensitive data or the disruption of critical business operations.
Technical details
This vulnerability is characterized as a race condition (CWE-362) and a use-after-free (CWE-416) issue within the Windows Operating System. An attacker with local access and low-level privileges can exploit improper synchronization of shared resources during concurrent execution. Successful exploitation allows the attacker to elevate their privileges to SYSTEM or Administrator level. The vulnerability affects Windows 11 (24H2, 25H2, 26H1) and Windows Server 2025. Microsoft has released security updates to address this issue.
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 of the CVE record.
- 2026-07-14: advisory: Microsoft released the security update guide for this vulnerability.