Windows
CVE-2025-24993
HIGH
Severity by source
AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.
AnalysisAI
A heap-based buffer overflow in the Windows NTFS driver allows unauthenticated local code execution, providing kernel-level access when a user mounts a crafted NTFS filesystem image. This KEV-listed vulnerability (CVE-2025-24993) targets the most widely used Windows filesystem, making it a significant threat through malicious USB drives, VHD files, or network shares.
Technical ContextAI
The NTFS.sys kernel driver improperly handles certain NTFS metadata structures, leading to a heap buffer overflow in the kernel pool. NTFS is the default and most trusted filesystem on Windows, so the attack surface is broad — any operation that causes Windows to parse NTFS metadata (mounting drives, opening VHDs, browsing network shares) can trigger the vulnerability.
Affected ProductsAI
Microsoft Windows 10 (all versions) Microsoft Windows 11 Microsoft Windows Server 2016/2019/2022
RemediationAI
Apply Microsoft security update immediately. This is KEV-listed — remediate per CISA deadlines. Restrict VHD mounting via Group Policy. Block VHD/VHDX attachments at email gateways. Limit removable media usage on sensitive systems.
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Same weakness CWE-122 – Heap-based Buffer Overflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today