CVE-2025-62555: 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

42 affected componentsFixes available
Microsoft Office LTSC 2024 for 32-bit editions
Microsoft Office LTSC 2024 for 64-bit editions
Microsoft Office LTSC 2021 for 64-bit editions
Microsoft Word 2016
Microsoft Office LTSC 2021 for 32-bit editions
Microsoft Word 2016
Microsoft 365 Apps for Enterprise
Microsoft Office 2019 for 64-bit editions
Microsoft 365 Apps for Enterprise
Microsoft SharePoint Server 2019
Microsoft SharePoint Enterprise Server 2016
Microsoft Office 2019 for 32-bit editions
Microsoft Office LTSC for Mac 2021
Microsoft Office LTSC for Mac 2024
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 Word 2016<16.0.5530.1000
16.0.5530.1000
Microsoft Word 2016<16.0.5530.1000
16.0.5530.1000
Microsoft Office LTSC for Mac 2024<16.104.25121423
16.104.25121423
Microsoft Office LTSC 2024 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2024 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC for Mac 2021<16.104.25121423
16.104.25121423
Microsoft Office LTSC 2021 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office 2019 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft SharePoint Enterprise Server 2016<16.0.5530.1000
16.0.5530.1000
Microsoft Office 2019 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft SharePoint Server 2019<16.0.10417.20075
16.0.10417.20075

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.104.25121423
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.5530.1000Patch KB5002806
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in https://aka.ms/OfficeSecurityReleases
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.5530.1000Patch KB5002804
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.10417.20075Patch KB5002802

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-2025-62555?

CVE-2025-62555 has a high severity rating due to its potential for remote code execution.

2

How do I fix CVE-2025-62555?

To fix CVE-2025-62555, apply the latest security updates provided by Microsoft for the affected versions of Word and other software.

3

What types of systems are affected by CVE-2025-62555?

CVE-2025-62555 affects various versions of Microsoft Word, Office LTSC, and SharePoint Server.

4

Can CVE-2025-62555 lead to data loss?

Yes, exploiting CVE-2025-62555 can potentially lead to unauthorized access and data loss.

5

Is CVE-2025-62555 being actively exploited?

As of the latest reports, CVE-2025-62555 is known to be actively targeted by attackers.

Contact

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