CVE-2026-49793
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
A heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
Risk Assessment
An attacker could run malicious code in the kernel, potentially leading to data corruption or system takeover.
Recommendation
Install security updates for Windows ReFS from Microsoft.
Other vulnerabilities in Windows Resilient File System (ReFS)
See all- CVE-2026-50501High
In Windows Resilient File System (ReFS), a stack-based buffer overflow vulnerability allows an unauthorized attacker to execute code locally.
- CVE-2026-50492Medium
A heap-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code via a physical attack.
- CVE-2026-50441High
Untrusted pointer dereference in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
- CVE-2026-50407High
A heap-based buffer overflow in the Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
- CVE-2026-50362High
A heap-based buffer overflow vulnerability in the Windows Resilient File System (ReFS) allows an unauthorized attacker to execute code locally.
- CVE-2026-50357High
A numeric truncation error in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally. The vulnerability stems from improper handling of numeric values during file system operations.
- CVE-2026-54109High
Integer overflow or wraparound in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
- CVE-2026-50318High
A stack-based buffer overflow in the Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
- CVE-2026-49792High
A numeric truncation error in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.
Original NVD description (English source)
Heap-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to execute code locally.