CVE-2025-62456 HIGH

CVE-2025-62456: Windows Resilient File System (ReFS) Remote Code Execution Vulnerability

Vendor Microsoft
Product Windows 11 version 22H3
Weakness CWE-122
Published December 9, 2025
Last update April 16, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

What the vulnerability does

01Description

Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code over a network.

Key dates

02Disclosure timeline

December 9, 2025 CVE published
April 16, 2026 Record updated