CVE-2017-0021

critical

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.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0021

http://www.securitytracker.com/id/1037999

http://www.securityfocus.com/bid/96020

Details

Source: Mitre, NVD

Published: 2017-03-17

Updated: 2025-04-20

Risk Information

CVSS v2

Base Score: 7.7

Vector: CVSS2#AV:A/AC:L/Au:S/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 9

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

Severity: Critical

EPSS

EPSS: 0.00631