CVE-2026-108436
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Out-of-Bounds Read in Microsoft Office Word

Vulnerability report for CVE-2026-108436, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-15

Last updated on: 2026-10-20

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.

CVSS Scores

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Meta Information

Published
2026-10-15
Last Modified
2026-10-20
Generated
2026-11-08
AI Q&A
2026-10-16
EPSS Evaluated
2026-11-07
NVD

Helpful Resources

Exploitability

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

Attack-Flow Graph

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Executive Summary

This vulnerability is an out-of-bounds read flaw in Microsoft Office Word. It allows an unauthorized attacker to access and disclose sensitive information over a network without needing special privileges or user interaction.

Detection Guidance

This vulnerability is an out-of-bounds read in Microsoft Office Word. Detection typically requires monitoring for unusual application behavior or crashes during document processing. Check for updated patches from Microsoft and review system logs for Word-related errors.

Impact Analysis

An attacker could exploit this to read memory contents outside the intended buffer, potentially accessing confidential data such as documents or sensitive information stored in memory.

Compliance Impact

The vulnerability allows unauthorized disclosure of information, which could lead to unauthorized access to sensitive data. This may impact compliance with GDPR (data protection) and HIPAA (health information privacy) by increasing the risk of data breaches.

Mitigation Strategies

Apply the latest security updates from Microsoft for Office Word and related products. Monitor Microsoft's security advisories for patches and disable Office macros if not required.

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