Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
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 CVE ID is unique from CVE-2019-0685, CVE-2019-0803.
AnalysisAI
Windows Win32k contains a use-after-free vulnerability enabling local privilege escalation to SYSTEM, exploited in the wild in April 2019 alongside CVE-2019-0803 in targeted campaigns.
Technical ContextAI
The use-after-free in win32k.sys occurs during window object destruction. A crafted application can trigger the free-and-reuse condition to gain arbitrary kernel write primitives for privilege escalation.
Affected ProductsAI
Multiple Windows versions affected
RemediationAI
Apply Microsoft security update. Implement kernel exploit protection via Windows Defender Exploit Guard ASR rules.
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External POC / Exploit Code
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