Microsoft Office Zero-Day (CVE-2026-21509) - Emergency Patch Issued for Active Exploitation
Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks
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Microsoft on Monday issued out-of-band security patches for a high-severity Microsoft Office zero-day vulnerability exploited in attacks
Cybersecurity researchers have called attention to a novel phishing campaign that leverages corrupted Microsoft Office documents and ZIP archives as a way to bypass email defenses
The 'widespread' campaign hunts for multimillion-dollar transactions A business email compromise scheme targeting CEOs and CFOs using Microsoft Office 365 combines phishing with a man-in-the-middle attack to bypass multi-factor authentication.…
The malware is using spreadsheets, documents, and other types of Microsoft Office attachments in a new and improved version that is often able to bypass email gateway-security scanners.