CVE-2025-49665: 
vulnerability analysis and mitigation

A race condition vulnerability was identified in Microsoft's Workspace Broker component, tracked as CVE-2025-49665. The vulnerability was discovered and reported to Microsoft, with the CVE being created on June 9, 2025, and subsequently published on July 8, 2025. This security flaw affects multiple versions of Microsoft Windows operating systems, including Windows Server 2012, Windows 11, and various Windows 10 versions (NVD, CVE).

The vulnerability is classified as a concurrent execution issue using shared resource with improper synchronization, also known as a race condition (CWE-362), combined with a Use After Free condition (CWE-416). Microsoft has assigned this vulnerability a CVSS v3.1 base score of 7.8 (High), with the following vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This scoring indicates that the vulnerability requires local access, low attack complexity, and low privileges, but can result in high impacts to confidentiality, integrity, and availability (NVD).

The vulnerability allows an authorized attacker with local access to elevate their privileges on affected systems. This elevation of privilege vulnerability could enable an attacker to execute arbitrary code with elevated system privileges, potentially gaining full control over the affected system (CVE).

Microsoft has identified the affected systems and versions, including Windows Server 2012/2016/2019/2022, Windows 11 (22H2, 23H2, 24H2), and various Windows 10 versions (1507, 1607, 1809, 21H2, 22H2). Users should update their systems to the versions specified in Microsoft's advisory (NVD).