IT admins will be busy this month patching Microsoft software and apps, but not nearly as busy as they were in January.

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Microsoft has released an out-of-band emergency security update to address a zero-day vulnerability in Microsoft Office that is being actively exploited, extending support for affected versions ...

A hole in Microsoft Office is being exploited by bad actors, including Russian hackers targeting Ukraine's government.

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

PCWorld reports that Microsoft issued emergency updates for a critical zero-day vulnerability (CVE-2026-21509) in Office that attackers exploited against Ukrainian authorities and EU institutions. The ...

A new high-severity zero-day vulnerability in Microsoft Office has been exploited in the wild, according to Microsoft. The tech giant released a patch in a January 26 advisory for the flaw which has ...

Microsoft issues emergency patch for Office zero-day CVE-2026-21509 Vulnerability allows attackers to bypass OLE mitigations and execute malware CISA adds flaw to KEV catalog; exploitation details ...

Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks. The vulnerability, tracked as CVE-2026-21509, carries a CVSS ...

Microsoft has released emergency out-of-band security updates to patch a high-severity Microsoft Office zero-day vulnerability exploited in attacks. The security feature bypass vulnerability, tracked ...