Out-of-bounds read in Microsoft Windows and Windows Server - CVE-2025-24991

Vulnerability identifier: #VU105513

CSH Severity: High

CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-24991

CWE-ID: CWE-125

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Windows NTFS. A remote attacker can trick the victim into mounting a specially crafted VHD, trigger an out-of-bounds read error and read contents of memory on the system.

Note, the vulnerability is being actively exploited in the wild.

Microsoft Windows
Windows Server

Install updates from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.5608, 10 22H2 10.0.19045.5608, 10 1507 10.0.10240.20947, 10 1607 10.0.14393.7876, 10 1809 10.0.17763.7009, 11 22H2 10.0.22621.5039, 11 23H2 10.0.22631.5039, 11 24H2 10.0.26100.3403, 11 24H2 10.0.26100.3476
Windows Server - addressed in versions 2008 R2 6.1.7601.27618, 2008 6.0.6003.23168, 2012 R2 6.3.9600.22470, 2012 6.2.9200.25368, 2016 10.0.14393.7876, 2019 10.0.17763.7009, 2022 23H2 10.0.25398.1486, 2022 10.0.20348.3270, 2022 10.0.20348.3328, 2025 10.0.26100.3403, 2025 10.0.26100.3476

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2025-24991

• Information disclosure in Windows NTFS