CVE-2026-32197
Use-After-Free in Microsoft Excel Enables Local Code Execution
Publication date: 2026-04-14
Last updated on: 2026-04-28
Assigner: Microsoft Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| 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 |
| microsoft | office_online_server | to 16.0.10417.20113 (exc) |
Helpful Resources
Exploitability
| 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The vulnerability allows an unauthorized attacker to execute code locally on Microsoft Office Excel due to a use after free issue.
Such unauthorized code execution can lead to compromise of sensitive data, which may impact compliance with data protection standards and regulations like GDPR and HIPAA.
However, specific effects on compliance or mitigation guidance related to these standards are not detailed in the provided information.
What immediate steps should I take to mitigate this vulnerability?
The vulnerability is a use after free in Microsoft Office Excel 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 they are available.