CVE-2017-0021

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2017-0021
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-03-17 00:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionHyper-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.

Risk And Classification

Primary CVSS: v3.0 9 CRITICAL from [email protected]

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

Problem Types: NVD-CWE-noinfo | Remote Code Execution

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9CRITICALCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
2.0[email protected]Primary7.7AV:A/AC:L/Au:S/C:C/I:C/A:C

CVSS v3.0 Breakdown

Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Adjacent
Access Complexity
Low
Authentication
Single
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:A/AC:L/Au:S/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 10 1607 All All All
Operating System Microsoft Windows Server 2016 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Corporation Hyper-V VSMB affected Hyper-V in Microsoft Windows 10 1607 and Windows Server 2016 Not specified

References

ReferenceSourceLinkTags
Microsoft Hyper-V Bugs Let Local Guest System Users Obtain Potentially Sensitive Information, Deny Service, and Gain Privileges on the Host System - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Microsoft Windows Hyper-V CVE-2017-0021 Memory Corruption Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Security Update Guide - Microsoft Security Response Center af854a3a-2127-422b-91ae-364da2661108 portal.msrc.microsoft.com Mitigation, Patch, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report