CVE-2026-40367
Microsoft Word Remote Code Execution Vulnerability
CVSS Score
8.4
EPSS Score
0.0%
EPSS Percentile
0th
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
| Vendor | microsoft |
| Product | microsoft 365 apps for enterprise |
| Ecosystems | |
| Industries | TechnologyEnterprise |
| Published | May 12, 2026 |
| Last Updated | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Microsoft / Microsoft 365 Apps for Enterprise
16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office 2019
19.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC 2021
16.0.1 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC 2024
16.0.0 < https://aka.ms/OfficeSecurityReleases
Microsoft / Microsoft Office LTSC for Mac 2021
16.0.1 < 16.109.26051019
Microsoft / Microsoft Office LTSC for Mac 2024
16.0.0 < 16.109.26051019
Microsoft / Microsoft SharePoint Enterprise Server 2016
16.0.0 < 16.0.5552.1002
Microsoft / Microsoft SharePoint Server 2019
16.0.0 < 16.0.10417.20128
Microsoft / Microsoft SharePoint Server Subscription Edition
16.0.0 < 16.0.19725.20280
Microsoft / Microsoft Word 2016
16.0.1 < 16.0.5552.1000