CVE-2019-0859

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.

Score

CVSS 3.1 7.8 High

Status

Analyzed - secure@microsoft.com

Published

2019-04-09

Last modified

2025-10-21

Known exploited (CISA KEV)

since 2021-11-03, action due 2022-05-03: Apply updates per vendor instructions.

Affected products

• Windows (Microsoft)
• Windows 10 1507 (Microsoft)
• Windows 10 1607 (Microsoft)
• Windows 10 1703 (Microsoft)
• Windows 10 1709 (Microsoft)
• Windows 10 1803 (Microsoft)
• Windows 10 1809 (Microsoft)
• Windows 7 (Microsoft)
• Windows 8.1 (Microsoft)
• Windows Rt 8.1 (Microsoft)
• Windows Server (Microsoft)
• Windows Server 1709 (Microsoft)
• Windows Server 1803 (Microsoft)
• Windows Server 2008 (Microsoft)
• Windows Server 2012 (Microsoft)
• Windows Server 2016 (Microsoft)
• Windows Server 2019 (Microsoft)

References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0859
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0859