CVE-2026-40364 (GCVE-0-2026-40364)

Vulnerability from cvelistv5 – Published: 2026-05-12 16:58 – Updated: 2026-06-02 23:16
VLAI
Title
Microsoft Word Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
  • CWE-908 - Use of Uninitialized Resource
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft 365 Apps for Enterprise Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office 2019 Affected: 19.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2021 Affected: 16.0.1 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC 2024 Affected: 16.0.0 , < https://aka.ms/OfficeSecurityReleases (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC for Mac 2021 Affected: 16.0.1 , < 16.109.26051019 (custom)
Create a notification for this product.
Microsoft Microsoft Office LTSC for Mac 2024 Affected: 16.0.0 , < 16.109.26051019 (custom)
Create a notification for this product.
Microsoft Microsoft Word 2016 Affected: 16.0.1 , < 16.0.5552.1000 (custom)
Create a notification for this product.
Date Public
2026-05-12 14:00
Show details on NVD website

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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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