CVE-2018-8166: High severity Microsoft Windows 10 vulnerability

Published May 9, 2018

Updated

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8120, CVE-2018-8124, CVE-2018-8164.

Affected Software

15 affected components

Microsoft Windows 10

Microsoft Windows 10=1607

Microsoft Windows 10=1703

Microsoft Windows 10=1709

Microsoft Windows 10=1803

Microsoft Windows 7=sp1

Microsoft Windows 8.1

Microsoft Windows RT 8.1

Microsoft Windows Server 2008=sp2

Microsoft Windows Server 2008=r2-sp1

Microsoft Windows Server 2012

Microsoft Windows Server 2012=r2

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-2018-8166

Event History

May 9, 2018

CVE Published

via MITRE·07:00 PM

Data Sourced

via MITRE·07:00 PM

DescriptionWeakness

Data Sourced

via NVD·07:29 PM

RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

What access does an attacker need to exploit this vulnerability?

The CVSS vector indicates local access and low privileges are required. No user interaction is required, but exploitation has high attack complexity.

What is the potential impact if exploitation succeeds?

Successful exploitation can elevate privileges and has high potential impact on confidentiality, integrity, and availability.

Which systems should be prioritized for remediation?

Prioritize affected Windows endpoints and servers, including Windows 7, Windows 8.1, Windows 10, Windows RT 8.1, and the listed Windows Server versions from 2008 through 2016. A patch is available.