CVE-2018-8639

7.8

CVSS
High

PUBLISHED

An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k...

Exploited in the wild Used in malware Low complexity No user interaction

Vendor: Microsoft
Product: 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
Published: Dec 12, 2018
EPSS: —

Description

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.

windows cisa malware ransomware microsoft nessus_scanner

CVSS scores

CVSS v3.1 7.8 High

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

CVSS v2.0 7.2

AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitation status

Exploited in the wild

Recorded 2025-03-03 00:00:00 UTC · Source

Used in malware

Recorded 2025-03-03 00:00:00 UTC · Source

SSVC decision points

Exploitation: active
Automatable: No
Technical impact: total

References

Known exploited vulnerability sources

Catalogues that list this CVE as a known exploited vulnerability.

Source	Added
CISA	Mar 03, 2025

Scanner integrations

Scanner	Reference	Detected
Nessus	https://www.tenable.com/plugins/nessus/119591	Jun 02, 2025

Potential proof of concepts

These PoCs are unverified and could contain malware. Use at your own risk.

timwhitez/CVE-2018-8639-EXP

github · Created 2019-12-27 07:39:07 UTC · 6 stars

CVE-2018-8639-EXP

ze0r/CVE-2018-8639-exp

github · Created 2019-03-05 14:18:07 UTC · 128 stars

Vulnerability detail