CVE-2017-0021

9.0 CRITICAL
Published: March 17, 2017 Modified: May 13, 2026
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://www.securityfocus.com/bid/96020
Source: secure@microsoft.com
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037999
Source: secure@microsoft.com
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021
Source: secure@microsoft.com
Mitigation Patch Vendor Advisory
http://www.securityfocus.com/bid/96020
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037999
Source: af854a3a-2127-422b-91ae-364da2661108
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021
Source: af854a3a-2127-422b-91ae-364da2661108
Mitigation Patch Vendor Advisory

6 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.0 / 10.0
EPSS (Exploit Probability)
1.7%
74th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

microsoft