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

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

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

This emergency zero-day patch blocks attackers from slipping past built-in protections and compromising your system.

Microsoft has finally addressed a serious zero-day vulnerability affecting multiple Office versions. However, not all users ...

Microsoft Office is one of the most comprehensive suites of productivity applications, as it comes packed with all the ...

What works well when handling Office files in Workspace ...

Microsoft suggests the threat is being used in phishing attacks against vulnerable systems since successful exploitation ...