CVE-2017-0021

CriticalCVSS 9.0/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.0 9.0/10CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected software

Vendor	Product	Versions
Microsoft Corporation	Hyper-V vSMB	Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016

References

http://www.securityfocus.com/bid/96020Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037999
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021Mitigation, Patch, Vendor Advisory
http://www.securityfocus.com/bid/96020Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037999
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021Mitigation, Patch, Vendor Advisory

Timeline

Published: Mar 17, 2017
Last modified: Jun 17, 2026
NVD status: Modified

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