CVE-2026-45643

Analyzed Analyzed - Analysis Complete

Untrusted Pointer Dereference in Microsoft Office Word

Publication date: 2026-06-09

Last updated on: 2026-06-19

Assigner: Microsoft Corporation

Description

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-09

Last Modified

2026-06-19

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-45643

EUVD

EUVD-2026-35690

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
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-822	The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.

Attack-Flow Graph

Executive Summary

This vulnerability involves an untrusted pointer dereference in Microsoft Office Word, which allows an unauthorized attacker to execute code locally on the affected system.

Impact Analysis

The impact of this vulnerability is that an attacker can execute code on your system with local access, potentially leading to full compromise of confidentiality, integrity, and availability of your data and system.

Mitigation Strategies

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft for Microsoft Office Word as soon as they become available.

Additionally, exercising caution when opening Word documents from untrusted sources can help reduce the risk of exploitation.

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