CVE-2026-69979: Windows AppX Deployment Service Security Feature Bypass Vulnerability
Improper protection of alternate path in Windows AppX Deployment Service allows an authorized attacker to bypass a security feature locally.
Other sources
Windows AppX Deployment Service Security Feature Bypass Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.19044.7807Patch KB5126657 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26300.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26100.33650Patch KB5126646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.22631.7652Patch KB5126653 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.28000.3231Patch KB5127646 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.26200.9711Patch KB5127648 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 10.0.20348.5761Patch KB5126655
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this issue?
An attacker needs local access with low-level privileges. No user interaction is required.
What is the expected security impact?
The vulnerability is rated medium severity with a CVSS score of 5.5. It has a high integrity impact, with no listed confidentiality or availability impact.
Which products are listed as affected?
The affected software list includes Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows Server 2022, Microsoft Windows Server 2025, and Microsoft AppX Deployment Service.