VISO TRUST MCP Server — agentic threat model
The VISO TRUST MCP Server presents a high confidentiality risk by exposing sensitive third-party risk, compliance, and vendor vulnerability data to AI agents. While its write-access is limited, unauthorized data extraction via prompt injection or compromised agent orchestrators could facilitate targeted supply chain attacks.
OWASP AIVSS score rationale
| Autonomy of Action | 0.30 | |
| Goal-Driven Planning | 0.40 | |
| Self-Modification | 0.00 | |
| Dynamic Tool Use | 0.50 | |
| Persistent Memory | 0.10 | |
| Contextual Awareness | 0.40 | |
| Dynamic Identity | 0.20 | |
| Multi-Agent Interactions | 0.50 | |
| Non-Determinism | 0.30 | |
| Opacity & Reflexivity | 0.30 |
Scored with the canonical OWASP AIVSS formula (AIVSS calculator reference); agentic risk factors estimated from the agent’s described capabilities.
MAESTRO 7-layer threat model
Per-layer threats for this agent. Layers tagged “not certain from listing” are general, caveated commentary where the public description didn’t pin that layer.
Not certain from the listing — The MCP server acts as an integration layer and does not specify the underlying foundation model used by the client AI assistant.
Exposes highly sensitive vendor-security, compliance, and risk assessment data. Primary threats include unauthorized data exfiltration, knowledge-base poisoning via manipulated vendor inputs, and leakage of proprietary security postures.
Utilizes the Model Context Protocol (MCP) for tool integration. Vulnerable to prompt injection attacks that could force the agent to query unauthorized vendor profiles or bypass intended read scopes.
Not certain from the listing — The deployment architecture (local MCP host vs. cloud-hosted) is unspecified, but insecure hosting could expose API keys used to authenticate to the VISO TRUST platform.
Not certain from the listing — No specific evaluation, logging, or guardrail mechanisms are detailed for monitoring the MCP queries or detecting anomalous data retrieval patterns.
Focuses on read-only access to sensitive risk programs. Requires robust authentication and authorization controls to ensure the querying agent only accesses vendor data aligned with the user's actual VISO TRUST permissions.
As an MCP server, it is designed to be integrated into broader agentic workflows. A compromised orchestrator agent could abuse this tool to systematically harvest vendor risk data across the entire ecosystem.
MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).