CVE-2018-8589

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32kOperating systems

CVSS

7.8High

ExploitationExploited in the wildAdded to KEV 23 May 2022CISA KEV

Exploit odds (EPSS)3.02%Chance of exploitation activity in the next 30 days, higher than 87% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed inNone listedNo source names a fixed version. Check the vendor advisory below

Federal deadline13 Jun 2022Remediation due date for US federal agenciesCISA KEV

CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

14 Nov 2018, 01:00 UTCPublishedCVE List
23 May 2022Added to CISA KEVCISA KEV

Description

A privilege escalation vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited this vulnerability could run remote code in the security context of the local system.

Text from CVE List

Affected versions 10

Windows Server 2008affected: 32-bit Systems Service Pack 2CVE List
Windows Server 2008affected: 32-bit Systems Service Pack 2 (Server Core installation)CVE List
Windows Server 2008affected: Itanium-Based Systems Service Pack 2CVE List
Windows Server 2008affected: x64-based Systems Service Pack 2CVE List
Windows Server 2008affected: x64-based Systems Service Pack 2 (Server Core installation)CVE List
Windows 7affected: 32-bit Systems Service Pack 1CVE List
Windows 7affected: x64-based Systems Service Pack 1CVE List
Windows Server 2008 R2affected: Itanium-Based Systems Service Pack 1CVE List
Windows Server 2008 R2affected: x64-based Systems Service Pack 1CVE List
Windows Server 2008 R2affected: x64-based Systems Service Pack 1 (Server Core installation)CVE List