What’s Vulnerable › Vulnerabilities

CVE-2019-1044: Windows Secure Kernel Mode Security Feature Bypass Vulnerability

• Severity: high (CVSS 7.2 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-06-12 · updated 2026-06-17

Description

A security feature bypass vulnerability exists when Windows Secure Kernel Mode fails to properly handle objects in memory. To exploit the vulnerability, a locally-authenticated attacker could attempt to run a specially crafted application on a targeted system. An attacker who successfully exploited the vulnerability could violate virtual trust levels (VTL). The update addresses the vulnerability by correcting how Windows Secure Kernel Mode handles objects in memory to properly enforce VTLs.

Affected products

• Microsoft Windows 10 Version 1607: 1809
• Microsoft Windows Server 2019: all versions
• Microsoft Windows 10: from 10.0.17763.0 before publication — fixed in publication
• Microsoft Windows Server 2019: from 10.0.17763.0 before publication — fixed in publication

How to fix

Upgrade to a fixed version: Microsoft Windows 10 publication; Microsoft Windows Server 2019 publication. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-1044
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1044

Get alerted when CVE-2019-1044 or the next vulnerability affects your stack