CVE-2019-0859—Microsoft Win32k Privilege Escalation Vulnerability

PUBLISHEDvulnerability record
2021-11-03 · last modified June 21, 2025

Metadata

CVE ID:
CVE-2019-0859
Project:
Microsoft
Product:
Win32k
Date Added:
2021-11-03
Due Date:
2022-05-03
Last Updated:
June 21, 2025

Vulnerability Name

Microsoft Win32k Privilege Escalation Vulnerability

Description

Microsoft Win32k fails to properly handle objects in memory causing privilege escalation. Successful exploitation allows an attacker to run code in kernel mode.

Known To Be Used in Ransomware Campaigns?

Ransomware Status:
Unknown

Action

Apply updates per vendor instructions.

Additional Notes

  • https://nvd.nist.gov/vuln/detail/CVE-2019-0859
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