What’s Vulnerable › Vulnerabilities

CVE-2019-0803: Microsoft Win32k Privilege Escalation Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 45.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-04-09 · updated 2026-06-17

Description

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-2019-0859.

Affected products

• Microsoft Windows 10 Version 1507: all versions
• Microsoft Windows 10 1607: all versions
• Microsoft Corporation Windows 10 1703: all versions
• Microsoft Windows 10 1709: all versions
• Microsoft Windows 10 1803: all versions
• Microsoft Windows 10: all versions
• Microsoft Windows 7: all versions
• Microsoft Windows 8.1: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 1709: all versions
• Microsoft Windows Server 1803: all versions
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: all versions
• Microsoft Windows Server 2019: all versions

References

• http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803
• http://packetstormsecurity.com/files/153034/Microsoft-Windows-Win32k-Privilege-Escalation.html
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0803
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0803

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