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OpenAdvisories
High · 7.5 CVE-2026-124170 EUVD-2026-122302GHSA-hc7c-4x33-hrvq

Microsoft Office Excel Remote Code Execution Vulnerability

Published Nov 10, 2026 · Updated Nov 12, 2026 · Assigned by microsoft

Description

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

Affected products

VendorProductAffectedFixed
Microsoft Microsoft 365 Apps for Enterprise 16.0.1 – < https://aka.ms/OfficeSecurityReleases https://aka.ms/OfficeSecurityReleases
Microsoft Microsoft Office 365 for Mac 1.0.0 – < 16.115.26110837 16.115.26110837
Microsoft Microsoft Office LTSC 2021 16.0.1 – < 16.0.14334.21048 16.0.14334.21048
Microsoft Microsoft Office LTSC 2024 16.0.0 – < 16.0.17932.21140 16.0.17932.21140
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 – < 16.115.26110837 16.115.26110837
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 – < 16.115.26110837 16.115.26110837
Microsoft Office Online Server 16.0.0.0 – < 16.0.10417.20236 16.0.10417.20236

Advisories 2

References