Microsoft fixes Outlook bug blocking access to encrypted emails

Microsoft has fixed a known issue that prevented Microsoft 365 customers from opening encrypted emails in classic Outlook ...

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.
SecurityWeek

Microsoft Patches Office Zero-Day Likely Exploited in Targeted Attacks

Microsoft released patches for CVE-2026-21509, a new Office zero-day vulnerability that can be exploited to bypass security ...

Microsoft Issues Emergency Patch for Active Office Zero-Day

Microsoft released an emergency Office patch to fix an actively exploited zero-day flaw that lets attackers bypass security ...

Microsoft's latest zero-day patch blocks a viral Office document hack - how to protect your PC ASAP

Microsoft's latest zero-day patch blocks a viral Office document hack - how to protect your PC ASAP ...

Worrying Microsoft Office security flaw patched - update now or risk hackers accessing your files

Microsoft forced to issue an emergency patch to fix an Office zero-day being actively exploited.