CVE-2026-33115

Received Received - Intake

Use-After-Free in Microsoft Word Enables Local Code Execution

Publication date: 2026-04-14

Last updated on: 2026-04-29

Assigner: Microsoft Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-04-14

Last Modified

2026-04-29

Generated

2026-07-06

AI Q&A

2026-04-14

EPSS Evaluated

2026-07-05

NVD

CVE-2026-33115

EUVD

EUVD-2026-22633

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	365_apps	*
microsoft	365_apps	*
microsoft	office_long_term_servicing_channel	2021
microsoft	office_long_term_servicing_channel	2024
microsoft	office_long_term_servicing_channel	2021
microsoft	office_long_term_servicing_channel	2021
microsoft	office_long_term_servicing_channel	2024
microsoft	office_long_term_servicing_channel	2024

Helpful Resources

Exploitability

CWE

KEV

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

Executive Summary

This vulnerability is a use after free issue in Microsoft Office Word that allows an unauthorized attacker to execute code locally on the affected system.

Impact Analysis

An attacker exploiting this vulnerability can execute arbitrary code on your system with high impact on confidentiality, integrity, and availability.

Mitigation Strategies

This vulnerability involves a use after free in Microsoft Office Word that allows an unauthorized attacker to execute code locally.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as possible.

Compliance Impact

The vulnerability allows unauthorized local code execution in Microsoft Office Word, which could lead to unauthorized access or manipulation of sensitive data.

Such unauthorized access or data compromise may impact compliance with standards and regulations like GDPR and HIPAA, which require protection of personal and sensitive information.

However, the provided information does not specify direct effects or compliance implications related to these regulations.

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