First observed
Campaign
SharePoint ToolShell Exploitation first observed
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MITRE ATT&CKSource
ActiveMITRE ATT&CK
SharePoint ToolShell Exploitation
The SharePoint ToolShell Exploitation campaign was conducted in July 2025 and encompassed the first waves of exploitation against incompletely patched spoofing (CVE-2025-49706) and remote code execution (CVE-2025-49704) vulnerabilities affecting on-premises Microsoft SharePoint servers. Later patched and updated as CVE-2025-53770 and CVE-2025-53771, the ToolShell vulnerabilities were widely exploited including by China-based ransomware actor Storm-2603 and espionage actors Threat Group-3390 and ZIRCONIUM. SharePoint ToolShell Exploitation targeted multiple regions and industries including finance, education, energy, and healthcare across Asia, Europe, and the United States.
First observedJul 1, 2025
Last observedJul 1, 2025
Attributed actors0
Source-backed events1
Attribution
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Activity
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About the context below
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Investigation context
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Related vulnerabilities 0
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ATT&CK techniques 0
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Malware and tools 0
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Indicators 0
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Sources
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