CVE-2025-29979: Microsoft Excel Remote Code Execution Vulnerability
First published: Tue May 13 2025(Updated: )
<p>Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.</p>
Credit: secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Office LTSC 2021 | ||
| Microsoft Office 2019 for Mac | ||
| Microsoft Office Professional Plus 2016 | ||
| Microsoft Office LTSC 2024 | ||
| Microsoft Office LTSC 2021 | ||
| Microsoft 365 Apps for enterprise | ||
| Microsoft Office 2019 for Mac | ||
| Microsoft Office LTSC 2024 | ||
| Microsoft Office Professional Plus 2016 | ||
| Microsoft 365 Apps for enterprise | ||
| Microsoft Office Online Server | ||
| Microsoft Office Long Term Servicing Channel for Mac | ||
| Microsoft Office Long Term Servicing Channel for Mac | ||
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-29979?
CVE-2025-29979 is a high-severity vulnerability due to its potential for allowing remote code execution.
How do I fix CVE-2025-29979?
To address CVE-2025-29979, install the latest security updates provided by Microsoft for the affected Office products.
Which Microsoft Office versions are affected by CVE-2025-29979?
CVE-2025-29979 affects multiple versions including Office 2016, Office 2019, and Office LTSC 2021 and 2024.
Can CVE-2025-29979 be exploited remotely?
No, CVE-2025-29979 requires local access for an attacker to exploit the buffer overflow vulnerability.
What type of vulnerability is CVE-2025-29979?
CVE-2025-29979 is classified as a heap-based buffer overflow vulnerability.
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