Microsoft Office Excel
CVE-2025-54899 — Microsoft Excel Remote Code Execution Vulnerability
Executive Summary
Free of memory not on the heap in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
None
USER INTERACTION
Required
SCOPE
Unchanged
Temporal Score: 6.8
EPSS Score
0.0054
probability of exploitation in the next 30 days
0.4109 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
12 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft 365 Apps for Enterprise for 32-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft 365 Apps for Enterprise for 64-bit Systems | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Excel 2016 (32-bit edition) | 5002782 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Excel 2016 (64-bit edition) | 5002782 (Security Update) |
Important | Remote Code Execution | Maybe |
| Microsoft Office 2019 for 32-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office 2019 for 64-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office LTSC 2021 for 32-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office LTSC 2021 for 64-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office LTSC 2024 for 32-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office LTSC 2024 for 64-bit editions | Click to Run (Security Update) |
Important | Remote Code Execution | No |
| Microsoft Office LTSC for Mac 2021 | — |
Important | Remote Code Execution | Unknown |
| Microsoft Office LTSC for Mac 2024 | — |
Important | Remote Code Execution | Unknown |
Patches
3 patches
| Article | Type | Restart |
|---|---|---|
Click to Run |
Security Update | No |
5002782 |
Security Update | Maybe |
— |
Unknown |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
HAO LI with Venustech
References
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