Junglewise Threat Intelligence

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

CVE-2025-24985 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2025-03-11

Technologies: Microsoft Windows, Microsoft Windows 11, Microsoft Windows Server, Microsoft Windows 10. Vendors: Microsoft.

Executive brief

An integer overflow or wraparound vulnerability in the Microsoft Windows Fast FAT File System Driver allows an unauthorized attacker to execute code locally. The vulnerability is triggered when a user interacts with a malicious file, leading to a heap-based buffer overflow.

Affected products

  • Microsoft Windows 10 1507, 1607, 1809, 21H2, 22H2
  • Microsoft Windows 11 22H2, 23H2, 24H2
  • Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019, 2022, 2025, 23H2

Timeline

  • 2025-03-11: disclosed
  • 2025-03-11: patched
  • 2025-03-11: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2025-03-11: exploited: Reported as exploited in the wild by CISA and Microsoft

Related threats