AI agents call download_firmware to retrieve information from Fortimanager without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Downloading firmware is fundamentally a retrieval/read operation—it fetches binary data without modifying FortiManager's configuration or state. However, the severity is elevated to 'medium' because downloaded firmware could be used maliciously if an agent were to deploy it to devices without authorization.
From the tool's definition Tool name 'download_firmware' suggests retrieving firmware files from FortiManager. The description is empty, limiting definitive classification.
Documented attack patterns abuse exactly the kind of access download_firmware gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Fortimanager, and nothing reaches the server without passing your rules. This is the rule we recommend for download_firmware:
{
"version": "1",
"default": "deny",
"tools": {
"download_firmware": {}
}
}download_firmware is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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download_firmware. It is categorised as a Read tool in the Fortimanager MCP Server, which means it retrieves data without modifying state.
Register the Fortimanager MCP server in PolicyLayer and add a rule for download_firmware: 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 Fortimanager. Nothing to install.
download_firmware is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the download_firmware 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.
Set action: deny in the PolicyLayer policy for download_firmware. 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.
download_firmware is provided by the Fortimanager MCP server (jmpijll/fortimanager-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Fortimanager, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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584 Fortimanager tools catalogued and risk-classified — across an index of 43,000+ MCP servers.