CVE-2026-49184: Windows NTFS Remote Code Execution Vulnerability

Overview

Severity
High (CVSS 8.4)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Remote Code Execution
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Jul
Released
2026-07-14

Description

Heap-based buffer overflow in Windows NTFS allows an unauthorized attacker to execute code locally.

Affected Products (27)

Windows

  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows 10 Version 21H2 for 32-bit Systems
  • Windows 10 Version 21H2 for ARM64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows Server 2025 (Server Core installation)
  • Windows 11 Version 25H2 for ARM64-based Systems
  • Windows 11 Version 25H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows Server 2025
  • Windows 11 version 26H1 for x64-based Systems
  • Windows 11 Version 26H1 for ARM64-based Systems
  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)

ESU

  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 10 Version 22H2 for ARM64-based Systems
  • Windows 10 Version 22H2 for 32-bit Systems
  • Windows Server 2012
  • Windows Server 2012 (Server Core installation)
  • Windows Server 2012 R2
  • Windows Server 2012 R2 (Server Core installation)

Security Updates (10)

Acknowledgments

pwn2addr, <a href="https://x.com/x0rb1ts">0rb1t</a> with <a href="http://www.0rb1t.top/">None</a>, <a href="https://github.com/qanux">Qanux</a> with None, <a href="https://x.com/_patchpoint_">Donghyeon Oh</a> with <a href="https://patchpoint.io/">Patchpoint</a>, Jonghoi Kim, Anonymous, Thanatos Tian (HKPolyU) &amp; wgg &amp; @2st__ with Diffract, yhw &amp; txz, Anonymous, <a href="https://www.linkedin.com/in/boolgombear/">Minjea Park</a> with <a href="https://stealien.com/main">Stealien</a>, R4nger with Kunlun Lab &amp; Zhiniang Peng with HUST, <a href="https://www.linkedin.com/in/p1nkjelly/">Minwoo Jeong (P1nkjelly)</a> with <a href="https://hacking.kaist.ac.kr/">KAIST Hacking Lab</a>

Revision History

  • 2026-07-14: Information published.