CVE-2025-54899
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2025-09-09
Last updated on: 2025-09-12
Assigner: Microsoft Corporation
Description
Description
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
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 | 2019 |
| microsoft | office | 2019 |
| microsoft | office_long_term_servicing_channel | 2021 |
| 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_long_term_servicing_channel | 2024 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-590 | The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc(). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a free of memory not on the heap issue in Microsoft Office Excel that allows an unauthorized attacker to execute code locally on the affected system.
How can this vulnerability impact me? :
An attacker could exploit this vulnerability to execute arbitrary code on your system with high impact on confidentiality, integrity, and availability, potentially leading to unauthorized access or control over your device.
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