CVE-2018-8639
Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability
CVSS
—
No CVSS
EPSS
22.2%
p98
KEV
YES
Mar 3, 2025
Exploit Today
79
0-100
Published: — · Last modified: —
Product
Microsoft / Windows
Vulnerability
Microsoft Windows Win32k Improper Resource Shutdown or Release Vulnerability
Added to KEV
Mar 3, 2025
Remediate by
Mar 24, 2025
Known ransomware use
Yes
Summary description
Microsoft Windows Win32k contains an improper resource shutdown or release vulnerability that allows for local, authenticated privilege escalation. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode.
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.
Notes
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2018-8639 ; https://nvd.nist.gov/vuln/detail/CVE-2018-8639