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🖼️ SharePoint RCE — ToolShell (CVE‑2025‑53770)

Critical deserialization of untrusted data vulnerability in Microsoft SharePoint allows unauthenticated remote code execution over the network. The exploit uses POST requests to /_layouts/15/ToolPane.aspx with HTTP Referer header /_layouts/SignOut.aspx to bypass authentication, then extracts MachineKey configuration to generate valid __VIEWSTATE payloads for arbitrary code execution via a single HTTP request.

🔗 Research:
https://research.eye.security/sharepoint-under-siege/

🔗 PoC:
https://gist.github.com/gboddin/6374c04f84b58cef050f5f4ecf43d501

🔗 Exploit:
https://github.com/soltanali0/CVE-2025-53770-Exploit

#ad #sharepoint #deserialization #toolshell #rce
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