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Microsoft Defender Zero-Day and 17-Year-Old Excel RCE Exploitation
CRITICAL
Threat Intel

Microsoft Defender Zero-Day and 17-Year-Old Excel RCE Exploitation

Analysis of recent threats including a Microsoft Defender zero-day, SonicWall brute-force campaigns, and critical RCE in legacy Microsoft Excel components.

Runtime Rebel Intel
3 min read·Apr 16, 2026