Claude executing a script via the MCP (Model Context Protocol) server demonstrates a critical Remote Code Execution (RCE) pathway, where the AI agent—intended to automate system-level tasks—can be manipulated to trigger unauthorized commands. In this scenario, Claude interfaces with the MCP server and is instructed to run a seemingly benign script, which covertly exfiltrates a bash shell. This effectively grants remote access to the underlying system, bypassing traditional security controls and enabling the attacker to execute arbitrary commands, extract sensitive data, or maintain persistent access. The vulnerability highlights the risks of giving AI agents unchecked command execution privileges on local machines, especially without strict sandboxing, auditing, or output validation mechanisms in place.
Home » Claude executing script via MCP server leading to exfiltration of bash shell (RCE – Remote Code Execution)