CVE-2022-32230
CVSS v3
7.5
HIGH
EPSS Score
7.5 %
exploit probability, as of 2026-10-05
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
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.
Technical details
- Published
- 2022-06-14
Frequently asked questions
What is CVE-2022-32230?
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.
Is CVE-2022-32230 actively exploited?
Active exploitation of CVE-2022-32230 has not been confirmed. Its EPSS score was 7.5% on 2026-10-05, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2022-32230?
CVE-2022-32230 has a CVSS v3 base score of 7.5 (HIGH severity).
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