CVE-2026-50454

Windows User Interface Core Elevation of Privilege Vulnerability

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

Affected

Microsoft · Windows 11 Version 24H2 · Windows 11 Version 25H2 · Windows 11 version 26H1 · Windows Server 2025 · Windows Server 2025 (Server Core installation)

CVSS v3.1 MICROSOFT

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.37% chance of exploitation in the next 30 days, 29th percentile

Published

2026-07-14

Updated

2026-10-08

Proof-of-concept exploits (1)

• DavidCarliez/Windows-AppResolver-LPE-PoC14★ · 2026-07-17

Security advisories

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50454

References

• CVE Record
• NVD entry

Related

• CVE-2019-9702
• CVE-2026-49176
• CVE-2026-54992
• CVE-2026-58635
• CVE-2026-66804