CVE-2017-0021

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

17/03/2017

Last modified:

20/04/2025

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.

Impact

Vector 3.x

CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.00 CRITICAL
Vector: CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.00

Severity 3.x

CRITICAL

Vector 2.0

AV:A/AC:L/Au:S/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.70 HIGH
Vector: AV:A/AC:L/Au:S/C:C/I:C/A:C

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete