CVE-2026-69979

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Improper Path Handling in Windows AppX Deployment Service

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Improper protection of alternate path in Windows AppX Deployment Service allows an authorized attacker to bypass a security feature locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-69979

EUVD

EUVD-2026-99130

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	10 Version 21H2 10.0.19044.0
Microsoft	Windows	10 Version 22H2 10.0.19045.0
Microsoft	Windows	11 version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 23H2 10.0.22631.0
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2022 10.0.20348.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-424	The product does not sufficiently protect all possible paths that a user can take to access restricted functionality or resources.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper protection of alternate paths in the Windows AppX Deployment Service. An authorized attacker can exploit this to bypass a security feature locally on affected systems.

Impact Analysis

An attacker could exploit this to bypass security protections on your Windows system, potentially allowing unauthorized actions or access. This could lead to further compromise of your device or data.

Compliance Impact

This vulnerability allows bypassing a security feature locally, which could undermine access controls and data protection measures required by standards like GDPR and HIPAA. Unauthorized modifications to system configurations may lead to non-compliance with data protection and security requirements.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows AppX Deployment Service vulnerability. Monitor Microsoft's security advisories for patches and follow their recommended mitigation steps.

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