8.4
High
Exploited
· ransomware
CVE-2018-8639 Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Known to be used
Weakness
CWE-404
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 7 | Versions not published | |
| Windows Server 2012 R2 | Versions not published | |
| Windows RT 8.1 | Versions not published | |
| Windows Server 2008 | Versions not published | |
| Windows Server 2019 | Versions not published | |
| Windows Server 2012 | Versions not published | |
| Windows 8.1 | Versions not published | |
| Windows Server 2016 | Versions not published | |
| Windows Server 2008 R2 | Versions not published |
Show the 2 other branches Hide the 2 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 10 | Versions not published | |
| Windows 10 Servers | Versions not published |
References
- 106093 www.securityfocus.com
- portal.msrc.microsoft.com portal.msrc.microsoft.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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