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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-55033

Microsoft Word Remote Code Execution Vulnerability

Description

Integer overflow or wraparound in Microsoft Office Word allows an unauthorized attacker to execute code locally.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Microsoft Microsoft 365 Apps for Enterprise

  • 16.0.1 to < https://aka.ms/OfficeSecurityReleasesaffected

Microsoft Microsoft Office 2019

  • 19.0.0 to < https://aka.ms/OfficeSecurityReleasesaffected

Microsoft Microsoft Office 365 for Mac

  • 1.0.0 to < 16.111.26071215affected

Microsoft Microsoft Office LTSC 2021

  • 16.0.1 to < https://aka.ms/OfficeSecurityReleasesaffected

Microsoft Microsoft Office LTSC 2024

  • 16.0.0 to < https://aka.ms/OfficeSecurityReleasesaffected

Microsoft Microsoft Office LTSC for Mac 2021

  • 16.0.1 to < 16.111.26071215affected

Microsoft Microsoft Office LTSC for Mac 2024

  • 16.0.0 to < 16.111.26071215affected

Microsoft Microsoft SharePoint Enterprise Server 2016

  • 16.0.0 to < 16.0.5561.1001affected

Microsoft Microsoft SharePoint Server 2019

  • 16.0.0 to < 16.0.10417.20175affected

Microsoft Microsoft SharePoint Server Subscription Edition

  • 16.0.0 to < 16.0.19725.20434affected

Microsoft Microsoft Word 2016

  • 16.0.1 to < 16.0.5561.1000affected

References