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CVE PROGRAM SOURCE RECORD8.4 High

CVE-2026-78510

Microsoft Outlook and Word Remote Code Execution Vulnerability

Description

Heap-based buffer overflow in Microsoft Office 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 < 16.0.20326.20138affected

Microsoft Microsoft Office 2016

  • 16.0.0 to < 16.0.5569.1000affected

Microsoft Microsoft Office 2019

  • 19.0.0 to < 16.0.10417.20207affected

Microsoft Microsoft Office 365 for Mac

  • 1.0.0 to < 16.113.26091433affected

Microsoft Microsoft Office LTSC 2021

  • 16.0.1 to < 16.0.14334.20906affected

Microsoft Microsoft Office LTSC 2024

  • 16.0.0 to < 16.0.17932.20976affected

Microsoft Microsoft Office LTSC for Mac 2021

  • 16.0.1 to < 16.113.26091433affected

Microsoft Microsoft Office LTSC for Mac 2024

  • 16.0.0 to < 16.113.26091433affected

References