CVE-2026-66310
Received Received - Intake

External Control of File Name in Microsoft Edge for Android

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Microsoft Corporation

Description
External control of file name or path in Microsoft Edge for Android allows an unauthorized attacker to disclose information locally.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-66310
EUVD
EUVD-2026-52523

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft edge *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-73 The product allows user input to control or influence paths or file names that are used in filesystem operations.

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Executive Summary

This vulnerability in Microsoft Edge for Android allows an unauthorized attacker to control file names or paths, potentially leading to local information disclosure. It is classified as an external control issue where user input is not properly validated.

Impact Analysis

An attacker could exploit this to access sensitive files on your device, steal data, or perform unauthorized actions locally. The high impact on confidentiality and integrity (CVSS 7.7) suggests significant risk if exploited.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties or reputational damage.

Mitigation Strategies

Update Microsoft Edge for Android to the latest version immediately to patch this vulnerability. Disable unnecessary file access permissions for the browser if possible and monitor for unusual file activity.

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