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CVE-2025-24985

Microsoft Windows Fast FAT File System Driver Integer Overflow

7.8 HIGHActively exploited (CISA KEV)Public exploitEPSS 3.92%
  1. Published11 Mar 2025
  2. Added to CISA KEV11 Mar 2025
  3. Remediation due1 Apr 2025
Actively exploited (CISA KEV)

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

Added to KEV: 11 Mar 2025Federal remediation due: 1 Apr 2025

Description

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

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

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
Microsoft Windows Server 2008r2
Microsoft Windows Server 2012r2
Microsoft Windows Server 2016< 10.0.14393.7876
Microsoft Windows Server 2019< 10.0.17763.7009
Microsoft Windows Server 2022< 10.0.20348.3270
Microsoft Windows Server 2022 23h2< 10.0.25398.1486
Microsoft Windows Server 2025< 10.0.26100.3403

Remediation

Fixed in
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
Microsoft Windows Server 2016≥ 10.0.14393.7876
Microsoft Windows Server 2019≥ 10.0.17763.7009

References

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Frequently asked

Is CVE-2025-24985 being actively exploited?

Yes. CVE-2025-24985 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 11 Mar 2025.

How severe is CVE-2025-24985?

CVE-2025-24985 has a CVSS 3.1 base score of 7.8, rated high. EPSS estimates a 3.92% probability of exploitation.

Which products are affected by CVE-2025-24985?

Affected products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, and 10 more.

How do I fix CVE-2025-24985?

Upgrade affected software to a fixed version, for example Microsoft Windows 10 1507 10.0.10240.20947, Microsoft Windows 10 1607 10.0.14393.7876, Microsoft Windows 10 1809 10.0.17763.7009 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-24985 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, a risk for it never ranks below high, and the update that fixes it moves to the Emergency patch lane. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.