CVE-2026-102204

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Improper Link Resolution Leading to Privilege Escalation in Microsoft Defender for Endpoint

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Improper link resolution before file access ('link following') in Microsoft Defender for Endpoint allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-102204

EUVD

EUVD-2026-100358

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	Defender for Endpoint for Linux *

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-59	The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper link resolution issue in Microsoft Defender for Endpoint that allows an authorized attacker to elevate their privileges locally by exploiting link following.

Impact Analysis

An attacker could gain higher privileges on your system, potentially allowing them to perform unauthorized actions or access sensitive data if they exploit this vulnerability.

Compliance Impact

This vulnerability allows local privilege escalation, which could enable unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (healthcare data) by increasing the risk of data breaches or unauthorized access to protected information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the vulnerability in Microsoft Defender for Endpoint.

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