CVE-2026-70133

Microsoft · Published October 13, 2026

7.5

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows SMB Server Denial of Service Vulnerability. Allocation of resources without limits or throttling in Windows SMB Server allows an unauthorized attacker to deny service over a network.

Affected Products

Windows 11 Version 26H2 for ARM64-based Systems
Windows 11 Version 26H2 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems

CVSS Vector

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