nxc_raw · Sec Netexec MCP: Risk & Policy

WHAT IT DOES

What nxc_raw does on Sec Netexec

AI agents invoke nxc_raw to trigger actions in Sec Netexec. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why nxc_raw needs a policy

This tool allows unrestricted execution of NetExec commands, which are inherently designed for network exploitation, lateral movement, credential harvesting, and system compromise across multiple protocols. The 'raw' and 'full control' phrasing indicates no argument validation or sandboxing.

From the tool's definition Tool description states 'Execute a raw NetExec command with full control over all arguments' combined with server description that this MCP enables 'execution of NetExec network penetration testing commands.' NetExec is a specialized penetration testing…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

nxc_raw Rate-limited

nxc_raw stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "nxc_raw": {
      "limits": [
        {
          "counter": "nxc_raw_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Sec Netexec, so you can run agents against it safely.

FAQ

Questions about nxc_raw

What does the nxc_raw tool do? +

Execute a raw NetExec command with full control over all arguments. Use for advanced scenarios not covered by other tools. It is categorised as a Execute tool in the Sec Netexec MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on nxc_raw? +

Register the Sec Netexec MCP server in PolicyLayer and add a rule for nxc_raw: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Sec Netexec. Nothing to install.

What risk level is nxc_raw? +

nxc_raw is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit nxc_raw? +

Yes. Add a rate_limit block to the nxc_raw rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block nxc_raw completely? +

Set action: deny in the PolicyLayer policy for nxc_raw. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides nxc_raw? +

nxc_raw is provided by the Sec Netexec MCP server (schwarztim/sec-netexec-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.