AI agents use user_local_update to create or update resources in FortiOS 7 6 X MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FortiOS 7 6 X MCP Server environment.
This tool creates or modifies user account data reversibly, fitting the Write category. It does not delete accounts (would be Destructive), execute arbitrary commands (would be Execute), or handle financial transactions. However, severity is high because unauthorized user account modifications could enable unauthorized access, privilege escalation, or account takeover on the FortiOS system.
From the tool's definition Tool name 'user_local_update' indicates modification of local user accounts on FortiOS 7.6.x. The suffix 'update' signifies a write operation that modifies existing user data.
Documented attack patterns abuse exactly the kind of access user_local_update gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FortiOS 7 6 X MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for user_local_update:
{
"version": "1",
"default": "deny",
"tools": {
"user_local_update": {
"limits": [
{
"counter": "user_local_update_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}user_local_update stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
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user_local_update. It is categorised as a Write tool in the FortiOS 7 6 X MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the FortiOS 7 6 X MCP Server MCP server in PolicyLayer and add a rule for user_local_update: 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 FortiOS 7 6 X MCP Server. Nothing to install.
user_local_update is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the user_local_update 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 user_local_update. 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.
user_local_update is provided by the FortiOS 7 6 X MCP Server MCP server (paoloamato2/fortinet-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FortiOS 7 6 X MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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240 FortiOS 7 6 X MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.