Integer overflow in Microsoft Windows and Windows Server - CVE-2025-24985

Vulnerability identifier: #VU105512

CSH Severity: High

CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-24985

CWE-ID: CWE-190

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow in Windows Fast FAT Driver. A remote attacker can trick the victim into mounting a specially crafted VHD, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable 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-2025-24985

• Arbitrary code execution in Windows Fast FAT Driver