CVE-2026-49793CWE-122

Windows Resilient File System (ReFS) Remote Code Execution Vulnerability

High · published July 14, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
25.4
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CVSS v4.0
Not supplied
EPSS
0.00333 · 25.4th percentile
Weakness
CWE-122 · Heap-based Buffer Overflow
Published
2026-07-14T17:05Z
EPSS history
Timeline
  • 14 JUL 17:05Z
    Windows Resilient File System (ReFS) Remote Code Execution Vulnerability
    cvelistv5