CVE-2018-8589

Microsoft Windows Server 2008, Microsoft Windows 7, Microsoft Windows Server 2008 R2

Published 14 Nov 2018 · updated 17 Jun 2026 · Analyzed

7.8 High · CVSS 3.1, NVD

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 23 May 2022, with a remediation deadline of 13 Jun 2022 for US federal agencies.

Required action: Apply updates per vendor instructions.

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.

References

www.securityfocus.com/bid/105796 · Broken Link, Third Party Advisory, VDB Entry
www.securitytracker.com/id/1042140 · Broken Link, Third Party Advisory, VDB Entry
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8589 · Patch, Vendor Advisory
www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8589 · US Government Resource