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OpenAdvisories
High · 7.8 CVE-2026-55017 EUVD-2026-44158GHSA-v986-mp4g-45cw

Microsoft Office Remote Code Execution Vulnerability

Published Jul 14, 2026 · Updated Nov 10, 2026 · Assigned by microsoft

Description

Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 2016 16.0.0 – < 16.0.5561.1000 16.0.5561.1000
Microsoft Microsoft Office 2019 19.0.0 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2021 16.0.1 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office LTSC 2024 16.0.0 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases

Advisories 3

References