CVE-2025-47973: 
vulnerability analysis and mitigation

A buffer over-read vulnerability was discovered in Microsoft's Virtual Hard Disk (VHDX) implementation, identified as CVE-2025-47973. The vulnerability was disclosed on July 8, 2025, affecting multiple versions of Microsoft Windows Server and Windows operating systems. This security flaw could potentially allow unauthorized attackers to elevate privileges on affected systems through local access (NVD, CVE).

The vulnerability has been classified as CWE-126 (Buffer Over-read) and received a CVSS v3.1 Base Score of 7.8 (HIGH) with the following vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This scoring indicates that the vulnerability requires local access, has low attack complexity, needs no privileges, but requires user interaction. The potential impact on confidentiality, integrity, and availability is rated as high (NVD).

The vulnerability affects multiple Microsoft Windows versions, including Windows Server 2008, 2012, 2016, 2019, 2022, and various Windows 10 and 11 releases. If successfully exploited, the buffer over-read vulnerability could allow an attacker to elevate their privileges on the affected system, potentially gaining higher levels of access to system resources (NVD).

Microsoft has released security updates for affected systems, with specific version requirements for different Windows releases. The updates include Windows Server 2008 through 2022, Windows 10 versions 1507 through 22H2, and Windows 11 versions 22H2 through 24H2. Users are advised to update their systems to the respective minimum versions specified in the advisory (NVD).