CVE-2026-70311
Received Received - Intake

Use After Free in Microsoft Office Word Allows Code Execution

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: Microsoft Corporation

Description
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-70311
EUVD
EUVD-2026-56568

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft office_word *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

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Executive Summary

This vulnerability is a use after free issue in Microsoft Office Word. It allows an unauthorized attacker to execute code locally on a victim's system by exploiting a memory corruption flaw.

Impact Analysis

An attacker could exploit this to run malicious code on your computer, potentially stealing data, installing malware, or taking control of your system. It requires user interaction, such as opening a specially crafted document.

Mitigation Strategies

Apply the latest security updates from Microsoft for Microsoft Office Word as soon as possible to patch the use-after-free vulnerability.

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