This vulnerability (CVE-2026-58527) involves a race condition (CWE-362) in the Windows Runtime component of Microsoft Windows 11 Version 24H2 (build 10.0.26100.0). Improper synchronization when concurrently accessing a shared resource allows a local attacker with some level of authorization to elevate their privileges. The CVSS v3.1 base score is 7.8 (high), reflecting local attack vector with low complexity, requiring privileges but no user interaction, and resulting in high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.

An authorized local attacker can exploit this race condition to elevate privileges on the affected Windows 11 system. Successful exploitation could lead to full compromise of system confidentiality, integrity, and availability. There are no known exploits in the wild at this time.

An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 11 Version 24H2 (build 10.0.26100.0) as soon as possible to remediate this vulnerability. Refer to the Microsoft security update guide at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58527 for detailed patch information and deployment instructions.