CVE-2025-62559: Microsoft Word Remote Code Execution Vulnerability
Published Dec 9, 2025
·Updated
Microsoft Word Remote Code Execution Vulnerability
Other sources
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
— Microsoft
Affected Software
28 affected componentsFixes available
Microsoft Office LTSC 2021 for 64-bit editions
Microsoft Office LTSC 2024 for 32-bit editions
Microsoft Office LTSC 2024 for 64-bit editions
Microsoft Word 2016
Microsoft Word 2016
Microsoft Office 2019 for 64-bit editions
Microsoft Office LTSC 2021 for 32-bit editions
Microsoft 365 Apps for Enterprise
Microsoft SharePoint Enterprise Server 2016
Microsoft 365 Apps for Enterprise
Microsoft Office 2019 for 32-bit editions
Microsoft SharePoint Server 2019
Microsoft 365 Apps
Microsoft 365 Apps
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 Macos=2021
Microsoft Office Long Term Servicing Channel=2024
Microsoft Office Long Term Servicing Channel=2024
Microsoft Office Long Term Servicing Channel Macos=2024
Microsoft SharePoint Server=2016
Microsoft SharePoint Server=2019
Microsoft Word=2016
Microsoft Word=2016
Microsoft Office LTSC for Mac 2024
Microsoft Office LTSC for Mac 2021
Event History
Dec 9, 2025
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Description
CVE Published
via MITRE·05:55 PM
Data Sourced
via MITRE·05:55 PM
DescriptionSeverity
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-62559?
CVE-2025-62559 is classified as a critical vulnerability due to its potential for remote code execution.
2
How do I fix CVE-2025-62559?
To fix CVE-2025-62559, ensure that you install the latest security updates from Microsoft for affected Office products.
3
Which products are affected by CVE-2025-62559?
CVE-2025-62559 affects multiple versions of Microsoft Word, Office LTSC, and SharePoint Server.
4
What type of vulnerability is CVE-2025-62559?
CVE-2025-62559 is a remote code execution vulnerability that allows unauthorized code execution through a use-after-free flaw.
5
Who is at risk for CVE-2025-62559?
Users of vulnerable Microsoft Office products are at risk for exploitation of CVE-2025-62559.