CVE-2025-29977: Microsoft Excel Remote Code Execution Vulnerability
First published: Tue May 13 2025(Updated: )
<p>Use after free 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 2019 for Mac | ||
| Microsoft 365 Apps for enterprise | ||
| Microsoft Excel | ||
| Microsoft 365 Apps for enterprise | ||
| Microsoft Office Online Server | ||
| Microsoft Office LTSC 2024 | ||
| Microsoft Office LTSC 2021 | ||
| Microsoft Excel | ||
| Microsoft Office LTSC 2021 | ||
| Microsoft Office LTSC 2024 | ||
| Microsoft Office 2019 for Mac | ||
| 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-2025-29977?
CVE-2025-29977 is classified as a critical vulnerability due to its potential for remote code execution.
How do I fix CVE-2025-29977?
To mitigate CVE-2025-29977, users should apply the latest security updates provided by Microsoft for affected versions of Office.
Which versions of Microsoft Excel are affected by CVE-2025-29977?
CVE-2025-29977 affects Microsoft Excel versions including Excel 2016, Office LTSC 2021, and Office 2019 for both 32-bit and 64-bit editions.
Can CVE-2025-29977 be exploited remotely?
CVE-2025-29977 allows attackers to execute code locally, which can be initiated through exploiting the vulnerable Microsoft Excel application.
What should I do if I'm using an affected version of Microsoft Office regarding CVE-2025-29977?
If you are using an affected version of Microsoft Office, you should immediately update to the latest version to protect against CVE-2025-29977.
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