Hacking, PenTest, and Cybersecurity Tools for Your Security Arsenal!

Loading CVE intelligence

Loading vulnerability catalog

Kitploit is a directory of hacking, cybersecurity, and pentesting tools. Discover the latest project updates to find vulnerabilities, analyze systems, automate testing, and strengthen your security.

Tool Directory

CVE-2018-8639

HighPublished

Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability

Published: Dec 12, 2018
Updated: Oct 21, 2025
Assigning CNA: microsoft
Evidence observed: Mar 3, 2025

Primary CVSS

8.4/ 10High

nvd · CVSS 3.1

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

EPSS probability estimate

22.2%

Moderate · next 30 days

Percentile: 97.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

Summary

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.

Sources

CVE-2018-8639-expExploit
Windows kernel exploit for CVE-2018-8639 targeting Windows 2008 and 2008 R2 systems with privilege escalation capabilities.
CVE-2018-8639-EXPExploit
CVE-2018-8639-EXP
windows-kernel-exploitsResearch
windows-kernel-exploits Windows平台提权漏洞集合

Responsible use

Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.