Use After Free Vulnerability in Microsoft Office Word by Microsoft
CVE-2025-49700

7.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Office 2019
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024
Vendor
CVE Published:
8 July 2025

What is CVE-2025-49700?

A use after free vulnerability exists in Microsoft Office Word, which can allow an unauthorized attacker to execute arbitrary code on a system. This typically occurs when specific operations lead to improper memory handling, leaving the application vulnerable to exploitation. Attackers can take advantage of this flaw to gain elevated privileges and execute malicious commands, posing substantial risks to data integrity and system security. Users are advised to apply the latest security updates to mitigate this risk.

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Deploy the Patch

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2019 32-bit Systems 19.0.0

Microsoft Office LTSC 2021 x64-based Systems 16.0.1

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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