CVE-2019-0859
Microsoft Win32k Privilege Escalation Vulnerability
IN CISA KEV
Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.
- Vendor
- Microsoft
- Product
- Win32k
- CVSS
- No score recorded (no NVD record loaded for this entry)
- CWE
- Not recorded
- Published
- Not recorded
- NVD modified
- Not recorded
CISA KEV
- Date added
- 2021-11-03
- Due date
- 2022-05-03
- Ransomware use
- Known
- Required action
- Apply updates per vendor instructions.
EPSS
4.15% chance of exploitation in the next 30 days (percentile 90th)
FIRST EPSS, updated 17 Oct 2026. About EPSS
CVSS is severity, EPSS is likelihood, KEV means already exploited. EPSS is a statistical probability, not a certainty: a low score does not make a bug safe, and a high one does not prove it is being exploited.
Data last updated 18 Oct 2026. Sources: NVD API 2.0, CISA KEV catalog, FIRST EPSS. Links: NVD, CISA KEV. Metadata only. ThreatWire does not host exploit code.