CVE-2026-32198
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 run malicious code on your computer with your user privileges. This can lead to complete 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 provided information does not specify how this vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should apply the security updates provided by Microsoft for Microsoft Office Excel as soon as they are available.
Additionally, avoid opening untrusted Excel files and ensure that your system's security settings prompt for user interaction before executing potentially unsafe content.