CVE-2018-8221: Medium severity Microsoft Windows 10 vulnerability

Published Jun 14, 2018

Updated

A security feature bypass vulnerability exists in Device Guard that could allow an attacker to inject malicious code into a Windows PowerShell session, aka "Device Guard Code Integrity Policy Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8201, CVE-2018-8211, CVE-2018-8212, CVE-2018-8215, CVE-2018-8216, CVE-2018-8217.

Affected Software

8 affected components

Microsoft Windows 10

Microsoft Windows 10=1607

Microsoft Windows 10=1703

Microsoft Windows 10=1709

Microsoft Windows 10=1803

Microsoft Windows Server 2016

Microsoft Windows Server 2016=1709

Microsoft Windows Server 2016=1803

Remediation

Patch Available

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8221

Event History

Jun 14, 2018

CVE Published

via MITRE·12:00 PM

Data Sourced

via MITRE·12:00 PM

DescriptionWeakness

Data Sourced

via NVD·12:29 PM

RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

The CVSS vector indicates local access and low privileges are required. No user interaction is required.

What systems are affected?

The affected products listed are Microsoft Windows 10 and Microsoft Windows Server 2016, including Windows 10 Servers.

What is the potential impact of successful exploitation?

An attacker could bypass Device Guard code integrity protections and inject malicious code into a Windows PowerShell session. The CVSS vector rates confidentiality, integrity, and availability impact as low.

Is a fix available?

Yes. A patch is available.