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CVE-2025-24985: Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability

criticalknown exploitedpublic exploitCVE-2025-24985
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Windows Fast FAT File System Driver contains an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Fast FAT File System DriverRemote code execution
What
This vulnerability allows an unauthorized attacker to execute code locally due to an integer overflow.
Who is affected
Unauthorized attackers on systems using the Fast FAT File System Driver are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and has critical severity.
Action
Apply the latest security updates for the Fast FAT File System Driver.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-03-11
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-24985

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-24985coverage & exploitation statusNVD · CVE.org

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