CVE-2025-24985

high-risk

Published 2025-03-11

Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.

Do I need to act?

0.71% chance of exploitation

EPSS score — low exploit probability

CISA KEV: actively exploited in the wild

On the Known Exploited Vulnerabilities catalog — federal agencies must patch

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.8/10 High

LOCAL / LOW complexity

Windows 10 1507

Windows 10 1607

Windows 10 1809

Windows 10 21H2

Windows 10 22H2

Windows 11 22H2

Windows 11 23H2

Windows 11 24H2

Windows Server 2008

Windows Server 2012

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 2022 23H2

Microsoft

Patch https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24985

Exploit https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerabi...

Mitigation https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerabi...

US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...

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high-risk

Severity 24/34 · High

Exploitability 9/34 · Low

Exposure 20/34 · Moderate