CVE-2026-69527

Analyzed Analyzed - Analysis Complete

Out-of-bounds Read in Windows USB Mass Storage Class Driver

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows USB Mass Storage Class Driver allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-30

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69527

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_usb_mass_storage_class_driver	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in the Windows USB Mass Storage Class Driver. It allows an authorized local attacker to read memory outside the intended buffer, potentially disclosing sensitive information.

Impact Analysis

An attacker with local access could exploit this to read sensitive data from memory, such as passwords or encryption keys. This could lead to further compromise of the system or data leakage.

Compliance Impact

This vulnerability could lead to unauthorized data disclosure, violating GDPR's data protection principles or HIPAA's confidentiality requirements. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows USB Mass Storage Class Driver vulnerability.

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