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Threat Intelligence Report

The SOC Files 5: Ghost in the pipeline, or a fileless SharePoint breach by Storm-2603

๐Ÿ“… November 5, 2026 ๐Ÿ“ฐ securelist.com ๐Ÿ” 3 CVE(s) referenced

Storm-2603 exploited ToolShell flaws in on-premises SharePoint to deploy a fileless in-memory webshell, pivot through victim networks, disable defenses, and attempt Warlock ransomware deployment.

vendor
CVE-2025-53771, CVE-2025-53770, CVE-2025-6264

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