Critical severity9.0NVD Advisory· Published Mar 17, 2017· Updated Jun 17, 2026

CVE-2017-0021

Description

Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 does not properly validate vSMB packet data, which allows attackers to execute arbitrary code on a target OS, aka "Hyper-V System Data Structure Vulnerability." This vulnerability is different from that described in CVE-2017-0095.

Affected products

Microsoft/Windows 10 1909
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*
Microsoft/Windows Server 2016
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
Microsoft/Windows 10 1809llm-fuzzy
Range: 1607
Microsoft/Windows Server 2008llm-fuzzy
Range: 2016
Microsoft Corporation/Hyper-V vSMBv5
Range: Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016

Patches

Vulnerability mechanics

References

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021nvdMitigationPatchVendor Advisory
www.securityfocus.com/bid/96020nvdThird Party AdvisoryVDB Entry
www.securitytracker.com/id/1037999nvd

News mentions

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