CVE-2026-105726

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Out-of-Bounds Read in Microsoft Defender

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Microsoft Defender allows an authorized attacker to disclose information 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-2026-105726

EUVD

EUVD-2026-99076

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Microsoft	Defender for Endpoint for Windows 1.0.0.0

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 Microsoft Defender. It allows an authorized attacker to read memory outside the intended buffer, potentially exposing sensitive information stored locally on the system.

Impact Analysis

An attacker could exploit this to access confidential data stored on your device, such as passwords, encryption keys, or other sensitive information. This requires the attacker to already have authorized access to the system.

Compliance Impact

This vulnerability allows unauthorized local information disclosure, which could lead to exposure of sensitive data. For GDPR, this may violate principles of data protection and confidentiality. For HIPAA, it could risk unauthorized access to protected health information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the out-of-bounds read vulnerability in Microsoft Defender.

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