CVE-2026-32189
Received Received - Intake
Use-After-Free in Microsoft Excel 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 Excel allows an unauthorized attacker to execute code locally.
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Meta Information
Published
2026-04-14
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-04-14
EPSS Evaluated
2026-06-15
NVD
CVE-2026-32189
EUVD
EUVD-2026-22569
Affected Vendors & Products
Showing 13 associated CPEs
Vendor Product Version / Range
microsoft office_online_server *
microsoft 365_apps *
microsoft 365_apps *
microsoft excel 2016
microsoft excel 2016
microsoft office_long_term_servicing_channel 2021
microsoft office 2019
microsoft office 2019
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
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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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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Executive Summary

This vulnerability is a use after free issue in Microsoft Office Excel. It 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 local access. This can lead to full compromise of confidentiality, integrity, and availability of your data and system.

Compliance Impact

This vulnerability allows an unauthorized attacker to execute code locally on a system running Microsoft Office Excel, which could lead to unauthorized access, data compromise, or data loss.

Such unauthorized access and potential data breaches can negatively impact compliance with common standards and regulations like GDPR and HIPAA, which require protection of sensitive data and maintaining data integrity and confidentiality.

Mitigation Strategies

To mitigate this vulnerability, you should apply the security updates provided by Microsoft for Microsoft Office Excel as soon as they become available.

Additionally, avoid opening untrusted Excel files and ensure that user privileges are minimized to reduce the impact of potential exploitation.

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