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8.4 High

CVE-2026-40367 Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker…

Description

Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Affected products and versions

Product Affected versions Fixed in
Microsoft 365 Apps for Enterprise 16.0 16.0.1 → latest No fix stated
Microsoft Office 2019 19.0 19.0.0 → latest No fix stated
Microsoft Office LTSC 2021 16.0 16.0.1 → latest No fix stated
Microsoft Office LTSC 2024 16.0 16.0.0 → latest No fix stated
Microsoft Office LTSC for Mac 2021 16.0 16.0.1 → < 16.109.26051019 16.109.26051019
Microsoft Office LTSC for Mac 2024 16.0 16.0.0 → < 16.109.26051019 16.109.26051019
Microsoft SharePoint Enterprise Server 2016 16.0 16.0.0 → < 16.0.5552.1002 16.0.5552.1002
Microsoft SharePoint Server 2019 16.0 16.0.0 → < 16.0.10417.20128 16.0.10417.20128
Microsoft SharePoint Server Subscription Edition 16.0 16.0.0 → < 16.0.19725.20280 16.0.19725.20280
Show the other branch
Product Affected versions Fixed in
Microsoft Word 2016 16.0 16.0.1 → < 16.0.5552.1000 16.0.5552.1000

References

Timeline

  1. Published
  2. Last modified

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CVE-2026-108454 Buffer over-read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network 6.5 Medium CVE-2026-108455 Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network 6.5 Medium CVE-2026-108453 Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information over a network 6.5 Medium CVE-2026-108451 Numeric truncation error in Microsoft Office Word allows an unauthorized attacker to execute code over a network 8.8 High
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