CVE-2026-25175: 
vulnerability analysis and mitigation

CVE-2026-25175 is an out-of-bounds read vulnerability in the Windows NT File System (NTFS) driver that allows a locally authorized, low-privileged attacker to elevate privileges on the affected system. Disclosed on March 10, 2026, as part of Microsoft's March 2026 Patch Tuesday, it affects a wide range of Windows versions including Windows 10 (1607, 1809, 21H2, 22H2), Windows 11 (23H2), Windows Server 2012, 2016, 2019, 2022, and Windows Server 2022 23H2. The vulnerability carries a CVSS v3.1 base score of 7.8 (High) (Microsoft MSRC).

The root cause is classified as CWE-125 (Out-of-bounds Read), mapped to CAPEC-540 (Overread Buffers), occurring within the Windows NTFS kernel driver. An attacker with low-privileged local access can trigger the out-of-bounds read condition — likely through a crafted file system operation or NTFS metadata interaction — to corrupt or leak kernel memory in a way that enables privilege escalation. No user interaction is required, and the attack complexity is rated Low, indicating the vulnerability is reliably exploitable once local access is obtained (Microsoft MSRC).

Successful exploitation allows a low-privileged local attacker to elevate privileges to SYSTEM level, resulting in high impact to confidentiality, integrity, and availability of the affected system. An attacker achieving SYSTEM privileges can read sensitive data, modify or destroy system files, disable security controls, and use the compromised host as a pivot point for lateral movement within a network. The broad scope of affected products — spanning consumer Windows 10/11 and enterprise Windows Server editions — significantly widens the potential attack surface (Microsoft MSRC).

Microsoft released patches on March 10, 2026 as part of the March 2026 Patch Tuesday update cycle. Administrators should apply the following minimum patched build versions: Windows 11 23H2 (10.0.22631.6783+), Windows 10 22H2 (10.0.19045.7058+), Windows 10 21H2 (10.0.19044.7058+), Windows 10 1809 (10.0.17763.8511+), Windows 10 1607 (10.0.14393.8957+), Windows Server 2022 (10.0.20348.4830+), and Windows Server 2022 23H2 (10.0.25398.2207+). As an interim measure, organizations should restrict local login access and minimize the number of accounts with interactive local access to reduce the pool of potential attackers (Microsoft MSRC).

The vulnerability was covered as part of broader March 2026 Patch Tuesday roundups by multiple security outlets. Rapid7, Sophos, Zero Day Initiative, and ISC SANS all published patch Tuesday reviews that included CVE-2026-25175 among the 79+ vulnerabilities addressed that month. Coverage was routine, with no specific researcher commentary singling out this CVE as particularly novel or immediately dangerous given the absence of public exploit code (Rapid7 Blog, Sophos Blog, ZDI Blog, ISC SANS).