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CVE-2026-56168 Details

Null pointer dereference in Windows SMB Server allows an authorized attacker to deny service over a network.

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56168	[email protected]	PatchVendor Advisory

CWE-ID	CWE Name	Source
CWE-476	NULL Pointer Dereference	[email protected]

Product	Versions
microsoft windows 10 21h2	< 10.0.19044.7548
CPE cpe:2.3:o:microsoft:windows_10_21h2:::::::: Remediation No remediation found in references.
microsoft windows 10 22h2	< 10.0.19045.7548
CPE cpe:2.3:o:microsoft:windows_10_22h2:::::::: Remediation No remediation found in references.
microsoft windows 11 24h2	< 10.0.26100.8875
CPE cpe:2.3:o:microsoft:windows_11_24h2:::::::: Remediation No remediation found in references.
microsoft windows 11 25h2	< 10.0.26200.8875
CPE cpe:2.3:o:microsoft:windows_11_25h2:::::::: Remediation No remediation found in references.
microsoft windows 11 26h1	< 10.0.28000.2269 < 10.0.28000.2525
CPE cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:* cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:* Remediation No remediation found in references.
microsoft windows server 2022	< 10.0.20348.5386
CPE cpe:2.3:o:microsoft:windows_server_2022:::::::: Remediation No remediation found in references.
microsoft windows server 2025	< 10.0.26100.33158
CPE cpe:2.3:o:microsoft:windows_server_2025:::::::: Remediation No remediation found in references.

4 change records found show changes

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