CVE-2022-32230: Microsoft Windows 10

High severity, CVSS 7.5. EPSS: 7.5% chance of exploitation in the next 30 days.

Microsoft Windows SMBv3 suffers from a null pointer dereference in versions of Windows prior to the April, 2022 patch set. By sending a malformed FileNormalizedNameInformation SMBv3 request over a named pipe, an attacker can cause a Blue Screen of Death (BSOD) crash of the Windows kernel. For most systems, this attack requires authentication, except in the special case of Windows Domain Controllers, where unauthenticated users can always open named pipes as long as they can establish an SMB session. Typically, after the BSOD, the victim SMBv3 server will reboot.

Affected products

• Microsoft Windows 10: version 20h2 only; version 21h1 only; version 21h2 only; version 1809 only
• Microsoft Windows 11: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified

Published 2022-06-14. Last modified 2026-06-17.