Microsoft recently published a security advisory warning of a newly discovered zero-day vulnerability in Office applications.

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

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

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

Microsoft has released an emergency patch for CVE-2026-21509, a zero-day Office vulnerability under active exploitation that ...

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

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

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