Use Microsoft Office? Hackers can infect your PC with a malicious document - patch it ASAP

Use Microsoft Office? Hackers can infect your PC with a malicious document - patch it ASAP ...

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 ...

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.
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 features.
The Hacker News

Microsoft Office Zero-Day (CVE-2026-21509) - Emergency Patch Issued for Active Exploitation

Microsoft released out-of-band patches for an actively exploited Microsoft Office zero-day, CVE-2026-21509, a security ...

High-risk Office security flaw: Microsoft issues emergency updates

A "high risk" security vulnerability was found in numerous versions of Microsoft Office. You should install the provided emergency updates ASAP.