Type Confusion Vulnerability in Microsoft Office Products
CVE-2025-29791

7.8HIGH

Key Information:

Vendor

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

What is CVE-2025-29791?

A type confusion vulnerability exists in Microsoft Office that allows an unauthorized attacker to exploit the system and execute code locally. This issue arises when the access of resources is performed using an incompatible type, potentially leading to the manipulation of memory and execution of arbitrary code. Users of affected Microsoft Office versions are advised to apply available updates to mitigate potential risks associated with this vulnerability.

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Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office 2016 32-bit Systems 16.0.0 < 16.0.5495.1002

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

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