CVE-2025-48001: 
vulnerability analysis and mitigation

A Time-of-check Time-of-use (TOCTOU) race condition vulnerability was identified in Windows BitLocker, tracked as CVE-2025-48001. The vulnerability was discovered and reported to Microsoft Corporation, with the initial CVE record created on May 14, 2025, and subsequently published on July 8, 2025. This security flaw affects multiple versions of Windows operating systems, including Windows Server 2012, Windows 11, and various versions of Windows 10 (NVD, CVE).

The vulnerability is classified as CWE-367 (Time-of-check Time-of-use Race Condition). Microsoft has assigned a CVSS v3.1 base score of 6.8 (Medium), with the following vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. This scoring indicates that while physical access is required (AV:P), the attack complexity is low (AC:L), requires no privileges (PR:N), and needs no user interaction (UI:N). The impact potential is high across confidentiality, integrity, and availability (NVD).

The vulnerability allows an unauthorized attacker with physical access to bypass BitLocker's security features. This could potentially compromise the confidentiality, integrity, and availability of data protected by BitLocker encryption (NVD).

Microsoft has released security updates for affected systems including Windows Server 2012/2012 R2, Windows Server 2016/2019/2022, Windows 10 (various versions), and Windows 11. System administrators should apply these updates to the affected versions as specified in the Microsoft Security Response Center advisory (Microsoft Advisory).