CVE-2026-70300

Analyzed Analyzed - Analysis Complete

Untrusted Pointer Dereference in Microsoft Office Word

Publication date: 2026-10-13

Last updated on: 2026-10-14

Assigner: Microsoft Corporation

Description

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-14

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-70300

EUVD

EUVD-2026-99720

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	office_2021	*
microsoft	office_2021	*
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 is an untrusted pointer dereference in Microsoft Office Word. It allows an unauthorized attacker to execute arbitrary code remotely over a network without user interaction.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially stealing data, installing malware, or taking control of your computer. It requires no user interaction and can be triggered remotely.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations must patch immediately to maintain compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft for affected Office products immediately. Monitor Microsoft's official advisory for patches and disable network access to Office applications if unpatched.

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