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Medium · 6.5 CVE-2026-80073 EUVD-2026-73828GHSA-rh5r-r8cf-3qp8

Microsoft Office Outlook Information Disclosure Vulnerability

Published Sep 8, 2026 · Updated Nov 10, 2026 · Assigned by microsoft

Description

Out-of-bounds read in Microsoft Office Outlook allows an unauthorized attacker to disclose information over a network.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < 16.0.20326.20138 16.0.20326.20138
Microsoft Microsoft Office 2019 19.0.0 – < 16.0.10417.20207 16.0.10417.20207
Microsoft Microsoft Office LTSC 2021 16.0.1 – < 16.0.14334.20906 16.0.14334.20906
Microsoft Microsoft Office LTSC 2024 16.0.0 – < 16.0.17932.20976 16.0.17932.20976
Microsoft Microsoft Outlook 2016 16.0.0.0 – < 16.0.5569.1000 16.0.5569.1000

Advisories 2

References