Reverse-Engineering MCPs Expose Dangerous Agent Privileges

MCP is not the security boundary; the connected debugger is. Giving an agent powerful reverse-engineering tools without strict authorization effectively turns model mistakes or injected instructions into executable actions.

• –x64dbg MCP implementations expose memory reads/writes, breakpoints, registers, tracing, and debugger command execution; authentication and network-binding defaults vary considerably.
• –GhidraMCP and IDA Pro MCP extend beyond passive inspection by allowing renames, comments, type changes, and database mutations.
• –Malicious strings, symbols, comments, or embedded instructions inside analyzed binaries can become indirect prompt-injection payloads.
• –Safe deployments need loopback-only access, strong tokens, read/write/execute separation, approval gates, audit logs, and isolated analysis environments.
• –The real product opportunity is a capability firewall for MCP reverse engineering, not simply more tools.