May 2026: Microsoft Word Remote Code Execution Vulnerability
CVE-2026-40361 Published on May 12, 2026
Microsoft Word Remote Code Execution Vulnerability
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-40361 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-40361
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Affected Versions
Microsoft 365 Apps for Enterprise:- Version 16.0.1 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 19.0.0 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.1 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.0 and below https://aka.ms/OfficeSecurityReleases is affected.
- Version 16.0.1 and below 16.109.26051019 is affected.
- Version 16.0.0 and below 16.109.26051019 is affected.
- Version 16.0.1 and below 16.0.5552.1000 is affected.