CVE-2026-55040: SharePoint attack after PoC publication, Microsoft warns episode artwork

EPISODE · Aug 13, 2026 · 9 MIN

CVE-2026-55040: SharePoint attack after PoC publication, Microsoft warns

from GoYou Cybersecurity (EN)

Una vulnerabilità critica in Microsoft SharePoint, identificata come CVE-2026-55040, è ora sfruttata attivamente dopo la pubblicazione di un proof-of-concept (PoC) da parte di Rapid7. La falla consente il bypass dell'autenticazione, permettendo agli attaccanti di accedere e modificare dati sensibili. Microsoft ha rilasciato una patch durante il Patch Tuesday di luglio 2026, ma gli attacchi sono già stati osservati in honeypot SharePoint. CISA e NHS England Digital hanno emesso avvertimenti urgenti, raccomandando misure di hardening per proteggere le implementazioni SharePoint.

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CVE-2026-55040: SharePoint attack after PoC publication, Microsoft warns

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