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

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

Microsoft rushed an emergency Patch Tuesday fix after a new Office zero-day began spreading in active attacks. CISA warns ...

Varonis Threat Labs has published a report detailing a now patched security exploit discovered in Copilot that let attackers steal data with a single-click.

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

Forbes contributors publish independent expert analyses and insights. Davey Winder is a veteran cybersecurity writer, hacker and analyst. Update, August 10, 2025: This story, originally published on ...

Microsoft has released Security Baseline v2512 for Microsoft 365 Apps with enhanced Excel and PowerPoint protections, blocking unsafe external links and legacy automation components.