Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability

Added to KEV
2025-03-11
Federal due date
2025-04-01
Vendor
Microsoft
Product
Windows
EPSS
85.3th percentile (score 0.024, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2025-24985

CISA short description

Microsoft Windows Fast FAT File System Driver contains an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code locally.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.