Microsoft Windows Fast FAT File System Driver Integer Overflow Vulnerability (CVE-2025-24985)
Severity: high · Patch status: patched · Since 2025-03-11 · CVE-2025-24985
Microsoft Windows Fast FAT File System Driver contains an integer overflow or wraparound vulnerability that allows an unauthorized attacker to execute code locally. CISA added CVE-2025-24985 to its Known Exploited Vulnerabilities catalog on Mar 11, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Apr 1, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
