CVE-2026-108463

Awaiting Analysis Awaiting Analysis - Queue

Improper Path Equivalence Resolution in Windows SmartScreen

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Improper resolution of path equivalence in Windows SmartScreen allows an unauthorized attacker to bypass a security feature over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-14

AI Q&A

2026-10-14

EPSS Evaluated

N/A

NVD

CVE-2026-108463

EUVD

EUVD-2026-100457

Affected Vendors & Products

Vendor	Product	Version / Range
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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-41	The product is vulnerable to file system contents disclosure through path equivalence. Path equivalence involves the use of special characters in file and directory names. The associated manipulations are intended to generate multiple names for the same object.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper handling of path equivalence in Windows SmartScreen. An attacker can exploit this to bypass a security feature by manipulating file paths over a network.

Impact Analysis

An attacker could bypass security checks to execute malicious files or gain unauthorized access. This may lead to data breaches, malware installation, or other security compromises on affected systems.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating compliance requirements for data protection standards like GDPR or HIPAA. Organizations may face penalties or legal consequences.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft to address the SmartScreen path equivalence issue. Monitor Microsoft's update guide for patches and install them promptly.

Hi! I’m here to help you understand CVE-2026-108463. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70