CVE-2018-8639
CVSS v3
7.8
HIGH
EPSS Score
31.9 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
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.
CISA Known Exploited Vulnerability
- Date Added
- 2025-03-03
- Patch Due Date
- 2025-03-24
- Ransomware Use
- Known
Technical details
- Published
- 2018-12-12
Frequently asked questions
What is CVE-2018-8639?
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.
Is CVE-2018-8639 actively exploited?
Yes. CVE-2018-8639 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2025-03-24.
What is the CVSS score for CVE-2018-8639?
CVE-2018-8639 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2018-8639 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.
No credit card required · 500 free checks/month · Free API key
Other 2018 vulnerabilities worth triaging
Ranked by exploit probability (EPSS).