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 ...
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Worrying Microsoft Office security flaw patched - update now or risk hackers accessing your files
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 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 ...
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 ...
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