Race Condition Vulnerability in Windows User Interface Core by Microsoft
CVE-2026-32163

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows 10 Version 21h2
Windows 10 Version 22h2
Windows 11 Version 22h3
Vendor
CVE Published:
14 April 2026

What is CVE-2026-32163?

A race condition in Windows User Interface Core can lead to unauthorized privilege escalation. This vulnerability arises when multiple executions occur concurrently using a shared resource without proper synchronization mechanisms, allowing attackers with local access to exploit the flaw and gain elevated permissions within the system.

Affected Version(s)

Windows 10 Version 1809 32-bit Systems 10.0.17763.0 < 10.0.17763.8644

Windows 10 Version 21H2 32-bit Systems 10.0.19044.0 < 10.0.19044.7184

Windows 10 Version 22H2 32-bit Systems 10.0.19045.0 < 10.0.19045.7184

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.