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Microsoft Sentinel Data Exploration MCP — agentic threat model

8.6AIVSS 8.6 · High

The Microsoft Sentinel Data Exploration MCP presents a high-risk profile due to its direct access to sensitive security telemetry and its role as a multi-agent tool. Its primary threats stem from indirect prompt injection via untrusted log data and unauthorized access to the Sentinel data lake.

OWASP AIVSS score rationale

AIVSS = (CVSS_Base + AARS) × Mitigation_Factor, where AARS = (10 − CVSS_Base) × (Factor_Sum / 10) × ThM
CVSS base 8.5AARS uplift 0.58Factor sum 3.7/10Threat ×1.05Mitigation ×0.95
Autonomy of Action
0.40
Goal-Driven Planning
0.30
Self-Modification
0.00
Dynamic Tool Use
0.60
Persistent Memory
0.10
Contextual Awareness
0.50
Dynamic Identity
0.40
Multi-Agent Interactions
0.70
Non-Determinism
0.30
Opacity & Reflexivity
0.40

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.

L1 · Foundation Models⚠ not certain from listing

Not certain from the listing — the underlying foundation model is not specified, but it would be highly vulnerable to indirect prompt injection via untrusted log content returned from Sentinel queries.

L2 · Data Operations✓ mapped

Directly accesses the Sentinel security data lake. Risks include data exfiltration of sensitive security telemetry and indirect prompt injection if malicious payloads are stored within the queried logs.

L3 · Agent Frameworks✓ mapped

Implements the Model Context Protocol (MCP) to expose Sentinel data-lake exploration tools. Vulnerable to tool misuse or insecure tool integration if the calling agent executes arbitrary queries or if returned log content triggers downstream exploits.

L4 · Deployment & Infrastructure✓ mapped

Runs as a remote endpoint or local MCP server. If compromised, it could allow lateral movement into the Sentinel workspace or broader Azure environment, requiring strict network isolation and secure hosting.

L5 · Evaluation & Observability⚠ not certain from listing

Not certain from the listing — no specific evaluation, guardrails, or observability mechanisms are mentioned for this MCP server, creating potential blind spots in detecting malicious queries.

L6 · Security & Compliance (cross-cutting)✓ mapped

Access scope is a first-order concern as it surfaces sensitive security telemetry. Requires robust authentication and authorization (RBAC) to ensure the calling agent only accesses authorized Sentinel workspaces.

L7 · Agent Ecosystem✓ mapped

Designed as an MCP server to let other agents explore Sentinel. This introduces multi-agent trust risks, where a compromised calling agent could abuse this tool to exfiltrate security logs.

MAESTRO — the 7-layer agentic threat-modeling framework (Cloud Security Alliance / Ken Huang).