Deserialization Vulnerability in Microsoft Office by Microsoft
CVE-2025-47994

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-2025-47994?

A deserialization vulnerability exists in Microsoft Office, within the way it handles untrusted data. This flaw could be exploited by attackers to gain unauthorized access, enabling them to elevate their privileges locally. Ensuring your Microsoft Office is up-to-date will mitigate the risk associated with this vulnerability.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5508.1001

Microsoft Office 2019 32-bit Systems 19.0.0

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

.
CVE-2025-47994 : Deserialization Vulnerability in Microsoft Office by Microsoft