CVE-2026-68894: Windows Error Reporting Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 8)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Elevation of Privilege
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2026-Sep
Released
2026-09-08

Description

Heap-based buffer overflow in Windows Error Reporting allows an authorized attacker to elevate privileges over a network.

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (30)

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 Server 2022 (Server Core installation)
  • 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 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 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

Zhang WangJunJie@Hillstone, He YiSheng, Anonymous, Anonymous, Danh Nguyen from OPSWAT Unit 515, Anonymous, <a href="https://www.linkedin.com/in/dongjun-lee-a1505b1b1/">Dongjun Lee</a> with <a href="https://kaist-hacking.github.io/">KAIST Hacking Lab</a>, <a href="https://x.com/heegong123">HeeChan Kim</a> with <a href="https://h4c.team/">TeamH4C</a>, <a href="https://infosec.exchange/@ynwarcs">goodbyeselene</a>, <a href="https://www.linkedin.com/in/dongjun-lee-a1505b1b1/">Dongjun Lee</a> with <a href="https://kaist-hacking.github.io/">KAIST Hacking Lab</a>, Danh Nguyen from OPSWAT Unit 515, <a href="https://sionthanatos.github.io/">Thanatos Tian (HKPolyU) &amp; npc0vo</a> with https://diffract-ai.com/

Revision History

  • 2026-09-08: Information published.