Microsoft patches actively exploited Office zero-day vulnerability

Microsoft has released emergency security updates to patch a high-severity Office zero-day vulnerability exploited in attacks ...

Microsoft Office Zero-Day Exploited Days After Emergency Patch, Update ASAP

A hole in Microsoft Office is being exploited by bad actors, including Russian hackers targeting Ukraine's government.
Windows Report

Microsoft Confirms Active Office Zero-Day Exploit, Deploys Emergency Fix

Microsoft releases an urgent out-of-band update for a critical Office zero-day flaw already exploited in real-world attacks.

Russian hackers exploit recently patched Microsoft Office bug in attacks

Ukraine's Computer Emergency Response Team (CERT) says that Russian hackers are exploiting CVE-2026-21509, a recently patched vulnerability in multiple versions of Microsoft Office.