CVE-2025-49761: 
vulnerability analysis and mitigation

CVE-2025-49761 is a Use-after-free vulnerability discovered in the Windows Kernel, which was disclosed on August 12, 2025. The vulnerability affects multiple versions of Microsoft Windows operating systems, including Windows 10, Windows 11, and various Windows Server editions (NVD).

The vulnerability is classified as CWE-416 (Use After Free) and has received a CVSS v3.1 base score of 7.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This indicates that the vulnerability requires local access, low attack complexity, low privileges, and no user interaction, while potentially impacting confidentiality, integrity, and availability at high levels (NVD).

The vulnerability allows an authorized attacker to elevate privileges locally on affected systems, potentially gaining higher levels of access to system resources and sensitive data (NVD).

Microsoft has identified the affected software versions and is tracking this vulnerability through their security update guide. The affected versions include Windows 10 (multiple versions), Windows 11, and various Windows Server editions up to specific build numbers (NVD).