high Known exploitedREV. 01

CVE-2025-24985Windows Fast FAT driver — integer overflow runs code locally

The Windows driver for the older file allocation format (Fast FAT) wraps an integer around and runs code on the machine when a crafted volume is mounted, with no account needed.

YOUR NEXT MOVE

Install the Microsoft update for this CVE now; removable media is the usual delivery, so also restrict which volumes may mount automatically.

Read the risk

THE VITAL STATS
CVSS score
7.8/ 10
CVSS v3.1
EPSS probability
4%
Likelihood of exploitation
Attack complexity
Low
Conditions needed to exploit
Known exploited
Yes — CISA KEV
CVE published
2025-03-11
Added to KEV
2025-03-11
Exploit published
Yes
Confidence
high
Kill chain
execution
MITRE ATT&CK
—
Severity
high

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

Attacker needsThe machine must mount an attacker-supplied volume or disk image.

Behind the card

5 REFERENCES
Field-level provenanceTRACE THE SOURCES +

Which source supports each field, when it was retrieved, and who extracted it.

FieldsSourceRetrievedExtractorConfidence
cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_atnvd.nist.gov2026-09-24scrty-crds-pipeline/0.1high
exploitation.known_exploited, exploitation.kev_addedcisa.gov2026-09-24scrty-crds-pipeline/0.1high
epssapi.first.org2026-09-24scrty-crds-pipeline/0.1high
title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisitesnvd.nist.gov2026-09-24claude-codehigh

Printing history

THE RECORD
  1. r1Initial base card

First printing. This card has not been reprinted since publication.

crds:cve-2025-24985 · CRDS 0.1 · Issued 2026-09-24