CVE-2018-8589

HighCVSS 7.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege Vulnerability." This affects Windows Server 2008, Windows 7, Windows Server 2008 R2.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
MicrosoftWindows Server 200832-bit Systems Service Pack 2; 32-bit Systems Service Pack 2 (Server Core installation); Itanium-Based Systems Service Pack 2; x64-based Systems Service Pack 2; x64-based Systems Service Pack 2 (Server Core installation)
MicrosoftWindows 732-bit Systems Service Pack 1; x64-based Systems Service Pack 1
MicrosoftWindows Server 2008 R2Itanium-Based Systems Service Pack 1; x64-based Systems Service Pack 1; x64-based Systems Service Pack 1 (Server Core installation)

References

Timeline

Published
Nov 14, 2018
Last modified
Jun 17, 2026
Added to CISA KEV
May 23, 2022
NVD status
Analyzed

Related CVEs from 2018

CVE-2018-85926.4An elevation of privilege vulnerability exists in Windows 10 version 1809 when installed from physical media (USB, DVD, etc, aka "Windows ElCVE-2018-85956.5An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory, aka "Windows CVE-2018-85966.5An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory, aka "Windows CVE-2018-85977.8A remote code execution vulnerability exists in Microsoft Excel software when the software fails to properly handle objects in memory, aka "CVE-2018-85984.7An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel InCVE-2018-85997.8An elevation of privilege vulnerability exists when the Diagnostics Hub Standard Collector Service improperly impersonates certain file operCVE-2018-86006.1A Cross-site Scripting (XSS) vulnerability exists when Azure App Services on Azure Stack does not properly sanitize user provided input, akaCVE-2018-86025.4A Cross-site Scripting (XSS) vulnerability exists when Team Foundation Server does not properly sanitize user provided input, aka "Team FounCVE-2018-86044.3A tampering vulnerability exists when Microsoft Exchange Server fails to properly handle profile data, aka "Microsoft Exchange Server TamperCVE-2018-86055.4A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) version 8 does not properly sanitize a specially craftCVE-2018-86065.4A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) version 8 does not properly sanitize a specially craftCVE-2018-86075.4A cross site scripting vulnerability exists when Microsoft Dynamics 365 (on-premises) version 8 does not properly sanitize a specially craft