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OpenAdvisories
Medium · 5.5 CVE-2026-55042 EUVD-2026-44216GHSA-frx9-7h8f-gr63

Microsoft Office Information Disclosure Vulnerability

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

Description

Use of uninitialized resource in Microsoft Office allows an unauthorized attacker to disclose information 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 365 for Mac 1.0.0 – < 16.111.26071215 16.111.26071215
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
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 – < 16.111.26071215 16.111.26071215
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 – < 16.111.26071215 16.111.26071215

Advisories 3

References