Live › vulnerability › CVE-2019-0859
Go to dashboardMicrosoft Win32k, the Windows kernel graphics driver, mishandles objects in memory, allowing privilege escalation. A local attacker who already has code running on the machine can run code in kernel mode, and CISA reports it exploited in the wild with known ransomware use.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Win32k | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Apply the Microsoft security update for CVE-2019-0859 per vendor instructions, as CISA requires; the specific KB or build is not in the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2019-0859")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.