Home/CVE/Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability
CVE

CVE-2025-24985

Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability

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

HIGH · CVSS 7.8 ⚠ CISA KEV EPSS 0.02385
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬢

Required Remediation

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

⬡

Weakness Classification

CWE-122Heap-based Buffer Overflow
CWE-190Integer Overflow or Wraparound
CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

15
microsoft windows 10 1507< 10.0.10240.20947
microsoft windows 10 1607< 10.0.14393.7876
microsoft windows 10 1809< 10.0.17763.7009
microsoft windows 10 21h2< 10.0.19044.5608
microsoft windows 10 22h2< 10.0.19045.5608
microsoft windows 11 22h2< 10.0.22621.5039
microsoft windows 11 23h2< 10.0.22631.5039
microsoft windows 11 24h2< 10.0.26100.3403
⚠

Public Exploits & PoCs

1
pocwww.vicarius.io · cve-2025-24985-integer-overflow-vulnerability-in-microsof...www.vicarius.io
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Mar 2025 · 05:16 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

2
msrcCVE-2025-24985Remote Code Execution
cisaKEV-CVE-2025-24985
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.vicarius.io/vsociety/posts/cve-2025-24985-integer-overflow-vulnerability-in-microsoft-windows-fast-fat-driver-mitigation-scriptMitigationThird Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24985US Government Resource
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