CVE-2025-54899
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-09

Last updated on: 2025-09-12

Assigner: Microsoft Corporation

Description
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
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Meta Information
Published
2025-09-09
Last Modified
2025-09-12
Generated
2026-06-16
AI Q&A
2025-09-09
EPSS Evaluated
2026-06-14
NVD
CVE-2025-54899
EUVD
EUVD-2025-27356
Affected Vendors & Products
Showing 12 associated CPEs
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
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KEV
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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().
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Executive Summary

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.

Impact Analysis

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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