17K+ SharePoint Servers Exposed to Internet – 840 Servers Vulnerable to 0-Day Attacks

A massive exposure of Microsoft SharePoint servers to internet-based attacks has been identified, with over 17,000 servers exposed and 840 specifically vulnerable to the critical zero-day vulnerability CVE-2025-53770, according to new findings from Shadowserver Foundation. The vulnerability, dubbed “ToolShell” by researchers, carries a critical CVSS score of 9.8 and allows unauthenticated attackers to execute arbitrary […]

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