Use After Free Vulnerability in Microsoft Office Word
CVE-2026-33115

8.4HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Apps For Enterprise
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024
Microsoft Office Ltsc For Mac 2021
Vendor
CVE Published:
14 April 2026

What is CVE-2026-33115?

A use after free vulnerability in Microsoft Office Word allows attackers to execute arbitrary code locally, potentially compromising sensitive data and system integrity. This vulnerability highlights the importance of keeping software updated to mitigate risks associated with potentially malicious exploits. Timely application of security updates is essential to protect users from unauthorized access and maintain the security of their systems.

Affected Version(s)

Microsoft 365 Apps for Enterprise 32-bit Systems 16.0.1

Microsoft Office LTSC 2021 32-bit Systems 16.0.1

Microsoft Office LTSC 2024 32-bit Systems 16.0.0

References

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

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.