CVE-2018-8639Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability

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 2019, 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-2018-8641.

8.4 HIGHEPSS 22.34%⚡ Known Exploited (CISA KEV)NVD: Published

Last updated: 2025-10-21 23:45 UTC

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
8.4	HIGH	3.1CISA-ADP	CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CVE ID: CVE-2018-8639
Status: Published
Assigner (CNA): microsoft
Published: Dec 12, 2018
Last modified: 2025-10-21 23:45 UTC
Weaknesses: CWE-404

Sources

NVD (unavailable at last refresh)
CVE.org
CISA KEV
FIRST EPSS

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