CVE-2025-24985 KEV
7.8
HIGH · CVSS 3.1 · EPSS 3.8% (pctl 90)
Patch first
On CISA KEV — known exploited in the wild, due 2025-04-01.
Description
Integer overflow or wraparound in Windows Fast FAT Driver allows an unauthorized attacker to execute code locally.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| EPSS | 3.85% — more likely to be exploited than 90% of all CVEs |
| Weakness | CWE-122 |
| On CISA KEV | yes — remediate by 2025-04-01 |
| Public exploit | none known |
| Published | 2025-03-11 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability |
|---|---|
| Added | 2025-03-11 |
| Due | 2025-04-01 |
| Vendor / product | Microsoft / Windows |
| Ransomware use | none reported |
Affected (15)
| Vendor | Product |
|---|---|
| microsoft | windows 10 1507 |
| microsoft | windows 10 1607 |
| microsoft | windows 10 1809 |
| microsoft | windows 10 21h2 |
| microsoft | windows 10 22h2 |
| microsoft | windows 11 22h2 |
| microsoft | windows 11 23h2 |
| microsoft | windows 11 24h2 |
| microsoft | windows server 2008 |
| microsoft | windows server 2012 |
| microsoft | windows server 2016 |
| microsoft | windows server 2019 |
| microsoft | windows server 2022 |
| microsoft | windows server 2022 23h2 |
| microsoft | windows server 2025 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24985
- https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerability-in-microsoft-windows-fast-fat-driver-detection-script
- https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerability-in-microsoft-windows-fast-fat-driver-mitigation-script
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24985
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