CVE-2026-80090

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Microsoft Office Word

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-30

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-80090

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	word	2016
microsoft	word	2016
microsoft	office_2019	*
microsoft	office_2019	*
microsoft	microsoft_365	*
microsoft	office_2021	*
microsoft	office_2021	*
microsoft	office_2021	*
microsoft	office_2024	*
microsoft	office_2024	*
microsoft	office_2024	*

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 Office Word. It allows an unauthorized attacker to read memory outside the intended boundary, potentially exposing sensitive information over a network.

Impact Analysis

An attacker could exploit this to access confidential data stored in memory, such as documents or credentials, without needing user interaction. This could lead to data leaks or unauthorized access to sensitive information.

Compliance Impact

This vulnerability could violate compliance requirements like GDPR or HIPAA by enabling unauthorized data access or disclosure. Organizations may face legal penalties or reputational damage if exploited.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected Office Word versions. Disable automatic opening of documents from untrusted sources. Monitor network traffic for suspicious activity related to Word document processing.

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