CVE-2026-70116HighCVSS 4.2

Windows Resilient File System (ReFS) Security Feature Bypass Vulnerability

Published
October 13, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-70116 →

📋 Description

Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an unauthorized attacker to bypass a security feature with a physical attack.

🎯 Affected products10

  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 11 Version 26H2 for ARM64-based Systems
  • Windows 11 Version 26H2 for x64-based Systems
  • Windows 11 version 26H1 for x64-based Systems
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Remediation

KB5127648 (Security Update) — fixed build 10.0.26100.9711 KB5127648 (Security Update) — fixed build 10.0.26200.9711 KB5127648 (Security Update) — fixed build 10.0.26300.9711 KB5126646 (Security Update) — fixed build 10.0.26100.33650 KB5127646 (Security Update) — fixed build 10.0.28000.3231

🔗 References (7)