CVE-2026-83997

Microsoft · Published September 8, 2026

8.1

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows Message Queuing Remote Code Execution Vulnerability. Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.

Affected Products

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

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C