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 ...

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

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

Emergency patch issued for Microsoft Office, 365 over hacking threat

Microsoft suggests the threat is being used in phishing attacks against vulnerable systems since successful exploitation requires local access to the PC.