PT-2026-88014 · Microsoft · 365 Apps+12

CVE-2026-78510

Published

2026-09-08

Updated

2026-09-08

CVSS v3.1

9.8

Critical

Vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Fix

RCE

Heap Based Buffer Overflow

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CVE-2026-78510

365 Apps

365 Apps For Enterprise

Office

Office 2016

Office 2019

Office 365 For Mac

Office Ltsc 2021

Office Ltsc 2024

Office Ltsc For Mac 2021

Office Ltsc For Mac 2024

365

Office 2021

Office 2024