CVE-2025-49690: 
vulnerability analysis and mitigation

A race condition vulnerability was identified in Microsoft's Capability Access Management Service (camsvc), tracked as CVE-2025-49690. The vulnerability was disclosed on July 8, 2025, affecting various versions of Microsoft Windows operating systems including Windows 10, Windows 11, and Windows Server editions. This security flaw allows an unauthorized attacker to potentially elevate privileges on affected systems through improper synchronization of shared resources (NVD, CVE Mitre).

The vulnerability is classified as a concurrent execution issue using shared resource with improper synchronization, also known as a race condition, specifically within the Capability Access Management Service. Microsoft has assigned a CVSS v3.1 base score of 7.4 (High), with a vector string of CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. The vulnerability is associated with CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization) and CWE-415 (Double Free) (NVD).

The vulnerability enables local privilege escalation, potentially allowing an unauthorized attacker to gain elevated privileges on affected systems. This could lead to complete compromise of system confidentiality, integrity, and availability on affected Windows installations (NVD).

Microsoft has released security updates to address this vulnerability across multiple Windows versions. Updates are available for Windows 10 (1809, 21H2, 22H2), Windows 11 (22H2, 23H2, 24H2), Windows Server 2019, Windows Server 2022 (21H2, 22H2, 23H2), and Windows Server 2025. These updates can be obtained through KB5062552, KB5062553, KB5062554, KB5062557, KB5062570, and KB5062572 (Rapid7).