Chinese Hackers Using ToolShell Vulnerability To Compromise Networks Of Government Agencies

China-based threat actors have exploited the critical ToolShell vulnerability in Microsoft SharePoint servers to infiltrate networks across multiple continents, targeting government agencies and critical infrastructure in a suspected espionage campaign. This vulnerability, identified as CVE-2025-53770, enables unauthenticated remote code execution and has been actively used since its disclosure in July 2025, despite Microsoft’s rapid patching […]

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