PT-2026-58477 · Microsoft · Windows 11 Version 24H2+3

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-50503

NVD

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Runtime allows an authorized attacker to elevate privileges locally.

Fix

Race Condition

Weakness Enumeration

CWE-362

Related Identifiers

CVE-2026-50503

Affected Products

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2025

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50503 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-50503 · Security Note