CVE-2025-24985Known exploitation

Code execution via crafted FAT disk image

Published Mar 11, 2025 · Updated Feb 26, 2026

Integer overflow in the Windows Fast FAT Driver allows remote attackers to execute code locally when a user mounts a crafted VHD file. An integer calculation wraps while the driver processes the crafted FAT image, leading to a heap-based buffer overflow. Exploitation requires user interaction with attacker-supplied media and grants code execution on the affected Windows host.

CVSS severity7.8
High
EPSS probability3.85%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the Windows Fast FAT Driver allows remote attackers to execute code locally when a user mounts a crafted VHD file. An integer calculation wraps while the driver processes the crafted FAT image, leading to a heap-based buffer overflow. Exploitation requires user interaction with attacker-supplied media and grants code execution on the affected Windows host.

The record

CVE
CVE-2025-24985
Published
Mar 11, 2025
Updated
Feb 26, 2026
Vendor
Microsoft
Product
Windows 10 Version 1507
Classifications
CWE-122, CWE-190, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 11, 2025Exploitation reportedCISA Known Exploited Vulnerabilities listing
  2. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  3. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.10240.0 <10.0.10240.20947

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Microsoft · Windows 10 Version 1507version=10.0.10240.0 <10.0.10240.20947
Microsoft · Windows Server 2019version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows Server 2016 (Server Core installation)version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows Server 2012 (Server Core installation)version=6.2.9200.0 <6.2.9200.25368
Microsoft · Windows Server 2012version=6.2.9200.0 <6.2.9200.25368
Microsoft · Windows 10 Version 21H2version=10.0.19044.0 <10.0.19044.5608
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)version=10.0.25398.0 <10.0.25398.1486
Microsoft · Windows Server 2016version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows 11 Version 22H3version=10.0.22631.0 <10.0.22631.5039
Microsoft · Windows Server 2008 R2 Service Pack 1version=6.1.7601.0 <6.1.7601.27618
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)version=6.1.7601.0 <6.1.7601.27618
Microsoft · Windows 10 Version 22H2version=10.0.19045.0 <10.0.19045.5608
Microsoft · Windows Server 2012 R2 (Server Core installation)version=6.3.9600.0 <6.3.9600.22470
Microsoft · Windows Server 2019 (Server Core installation)version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows 11 Version 23H2version=10.0.22631.0 <10.0.22631.5039
Microsoft · Windows 11, version 22H2version=10.0.22621.0 <10.0.22621.5039
Microsoft · Windows 10 Version 1607version=10.0.14393.0 <10.0.14393.7876
Microsoft · Windows Server 2008 Service Pack 2version=6.0.6003.0 <6.0.6003.23168
Microsoft · Windows Server 2022version=10.0.20348.0 <10.0.20348.3328
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.3476
Microsoft · Windows 10 Version 1809version=10.0.17763.0 <10.0.17763.7009
Microsoft · Windows Server 2012 R2version=6.3.9600.0 <6.3.9600.22470
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)version=6.0.6003.0 <6.0.6003.23168

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationReported
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-190Integer Overflow or Wraparound
T1204.002Malicious File

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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