Executive brief
A security vulnerability has been identified in the Microsoft Windows Content Delivery Manager, a component responsible for managing system content and background updates. 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 view sensitive data, install malicious software, or disrupt business operations.
Technical details
A use-after-free (UAF) vulnerability exists in the Windows Content Delivery Manager component, often triggered by a race condition (CWE-362) during concurrent execution using shared resources. The flaw allows a locally authenticated attacker with low privileges to execute code in a higher-privileged context. Successful exploitation can lead to a full compromise of the affected system's integrity, confidentiality, and availability. Microsoft has released security updates to address this issue across multiple versions of Windows 10, Windows 11, and Windows Server.
Affected products
- Microsoft Windows 10 1809, 21H2, 22H2
- Microsoft Windows 11 24H2, 25H2, 26H1
- Microsoft Windows Server 2019 All versions
- Microsoft Windows Server 2025 All versions
Timeline
- 2026-07-14: advisory: Initial advisory published by Microsoft and NVD.