Windows User Interface Core Elevation of Privilege Vulnerability

HighVendor CVSS 7.8 / 10 1 CVE Published Jul 14, 2026 at 7:00 AM UTC

Summary

Relative path traversal in Windows User Interface Core allows an authorized attacker to elevate privileges locally.

Install KB5099536. Install KB5101650. Install KB5101649.

Update history

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Oct 16, 2026 at 5:50 PM UTC
- Severity changed from High to Unknown.
- Removed affected products: Windows 11 Version 24H2 for ARM64-based Systems, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 25H2 for ARM64-based Systems, Windows 11 Version 25H2 for x64-based Systems, Windows 11 Version 26H1 for....
- Removed fixed versions: 10.0.26100.8875, 10.0.26100.33158, 10.0.26200.8875, 10.0.28000.2525.

Jul 14, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Sep 28, 2026 at 11:20 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Nov 11, 2026 at 2:20 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

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