CVE-2026-72949

Microsoft · Published September 8, 2026

7.5

CVSS v3.1

HIGH

Patch availableGet patch

Description

Windows SMB Server Network Transport Driver (srvnet.sys) Denial of Service Vulnerability. Null pointer dereference in Windows SMB Server Network Transport Driver (srvnet.sys) allows an unauthorized attacker to deny service over a network.

Affected Products

Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2025 (Server Core installation)
Windows 11 Version 25H2 for ARM64-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