High · 7.0 CVE-2026-88224 EUVD-2026-121534GHSA-rmc4-gvxj-523j

Windows AppX Deployment Service Elevation of Privilege Vulnerability

Published Nov 10, 2026 · Updated Nov 13, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows Server 2016 Product: Windows Server 2016 (Server Core installation) Product: Windows Server 2019 Product: Windows Server 2019 (Server Core installation) Platform: Windows

Description

Improper link resolution before file access ('link following') in Windows AppX Deployment Service allows an authorized attacker to elevate privileges locally.

Affected products

Vendor	Product	Affected	Fixed
Microsoft	Windows 10 Version 1607	10.0.14393.0 – < 10.0.14393.9688	10.0.14393.9688
Microsoft	Windows 10 Version 1809	10.0.17763.0 – < 10.0.17763.9487	10.0.17763.9487
Microsoft	Windows Server 2016	10.0.14393.0 – < 10.0.14393.9688	10.0.14393.9688
Microsoft	Windows Server 2016 (Server Core installation)	10.0.14393.0 – < 10.0.14393.9688	10.0.14393.9688
Microsoft	Windows Server 2019	10.0.17763.0 – < 10.0.17763.9487	10.0.17763.9487
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 – < 10.0.17763.9487	10.0.17763.9487

Advisories 2

WID-SEC-2026-4478 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
MSRC-CVE-2026-88224 Windows AppX Deployment Service Elevation of Privilege Vulnerability Microsoft Security Response Center · Nov 10, 2026

References

Windows AppX Deployment Service Elevation of Privilege Vulnerability vendor-advisory patch