Can I use Vanta or Drata for CMMC Level 2?

General-purpose GRC platforms like Vanta, Drata, and Hyperproof are designed for SOC 2 and ISO 27001 — not CMMC L2. CMMC L2 scope is mechanical (wherever CUI flows), not declared; CMMC L2 evidence includes detect-and-respond telemetry that may itself be CUI and cannot be pushed to a multi-tenant SaaS that doesn't hold CMMC L2 authorization; and C3PAO assessments evaluate an SPRS score against 110 weighted requirements per 32 CFR Part 170, not a pass/fail. Run these platforms for SOC 2 in parallel if you need it, and run a CMMC-native stack for CMMC L2.

Why does CMMC L2 scope work differently than SOC 2 scope?

SOC 2 scope is declared — you write a system description and the auditor evaluates controls against that narrative. CMMC L2 scope is mechanical per the CMMC Assessment Guide Level 2: any asset that stores, processes, or transmits CUI is in scope, plus any asset providing a security function to that boundary. You cannot descope an asset by writing it out of the SSP. That's why the first artifact of a competent CMMC L2 engagement is an authorization boundary diagram, not a control matrix.

Where does CMMC L2 evidence have to live?

Detect-and-respond evidence (SIEM logs, endpoint detection alerts, forensic artifacts) must stay inside the client's CMMC L2 authorization boundary. SIEM and incident-response data frequently contains CUI, especially during an active incident. Pushing that evidence to a multi-tenant SaaS that doesn't itself hold CMMC L2 authorization makes the SaaS an unauthorized destination for CUI — a compliance problem, not a convenience issue. This is why grc.engineering deploys SOCFortress CoPilot per-client inside the client's own cloud.

2026-04-12 · 6 min read · buyer guide

Why CMMC L2 breaks every general-purpose GRC platform.

If you're a DIB contractor evaluating Vanta, Drata, Hyperproof, or similar platforms for your CMMC L2 readiness, this is the honest answer: they are excellent products for their design target, which is SOC 2 and ISO 27001 programs at cloud-native SMBs. CMMC L2 is not that. Three things break the analogy.

1. Scope is the product

SOC 2 scope is declared. You write a description of the system in scope, and the auditor evaluates the controls in that scope. You can (and do) exclude the marketing website, HR tools, and the development laptop fleet.

CMMC L2 scope is mechanical. It is any asset that stores, processes, or transmits CUI, plus any asset that provides a security function to the CUI boundary. You cannot exclude a laptop by declaring it. If it touches CUI, it's in scope. If it's on the same VLAN as CUI, it's probably in scope. If it shares credentials with something in scope, it's in scope.

This is why the first artifact of a competent CMMC L2 engagement isn't a control matrix — it's an authorization boundary diagram. Every general-purpose GRC platform assumes scope is pre-declared. That assumption flips the problem.

2. Where the evidence lives

SOC 2 evidence is typically a log, a ticket, a signed policy. A GRC platform can store these happily. You upload them, they sit in the platform's SaaS, the auditor accesses the platform.

CMMC L2 evidence includes telemetry. Specifically, the DoD expects you to have detect-and-respond capability over your CUI boundary — SIEM logs, endpoint detection, incident response artifacts, forensic triage. Much of this evidence is CUI itself, or will contain CUI the moment an incident occurs.

You cannot lawfully push that evidence to a multi-tenant SaaS operated by a company that doesn't carry the CMMC L2 authorization you're trying to achieve. The platform itself becomes an unauthorized destination for CUI.

The concrete consequence: any detect/respond stack for a CMMC L2 program must run inside the client's authorization boundary. This is why our architecture deploys SOCFortress CoPilot (Wazuh + Graylog + Velociraptor + DFIR-IRIS + Shuffle) per-client inside the client's cloud, not centralized in our infrastructure. See ADR-003 for the code-verified rationale.

3. The assessor isn't interchangeable

SOC 2 auditors are interchangeable CPAs. Your GRC platform exports a report; any CPA can read it.

A C3PAO is not interchangeable. They're DoD-certified, their assessment methodology follows NIST SP 800-171A, and what they're evaluating is your SPRS score computed against 110 weighted requirements — with partial credit based on the point values in SPRS. Miss AC.L2-3.1.1 and you lose 5 points straight off 110. A GRC platform that outputs a percentage-complete dashboard doesn't help you model that.

SPRS is also not a pass/fail — your contracting officer cares about the number. DoD is moving toward minimum SPRS thresholds in contract awards. A 88 today is meaningfully different from a 102 for primes.

What a CMMC-native stack looks like instead

Capability	General GRC platform	CMMC-native stack
Source of truth for controls	Proprietary internal model	NIST OSCAL catalogs, pinned by sha256 (see registry)
Evidence collection	File upload / integrations to SaaS inbox	Prowler + Steampipe against your own infrastructure, output stays in your account
Detect / respond	Not offered — buy separately	SOCFortress CoPilot, deployed per-client inside your boundary
SSP format	Exported PDF / Word	OSCAL component-definitions + GSN assurance fragments, rendered to markdown for paper review
POA&M	Manually maintained list	Auto-emitted from failed pipeline stages with check IDs
Drift detection	Periodic audits / manual re-attestation	CI gate on every commit; SSP is never more than one commit stale
Scope modeling	Declared at tenant level	Authorization boundary enforced by Terraform + OPA (logical isolation + policy-as-code)

When a general-purpose GRC platform is still right

We're not arguing you should never use one. Real answers, specifically:

Running SOC 2 in parallel? A platform like Drata is probably your best path for the SOC 2 side. CMMC and SOC 2 can coexist — run the SOC 2 tooling, run CMMC separately, don't let either leak into the other's scope.
Only at CMMC L1? L1 is 17 FAR basic practices, self-attested. A platform with a compliance template for FAR 52.204-21 will get you there.
Handling no CUI but anticipating it? Use the platform for SOC 2 now; build the CMMC-native stack before you accept your first CUI-bearing contract.

The summary

The gap between general-purpose GRC platforms and CMMC L2 isn't control coverage — most platforms have NIST 800-171 mappings somewhere. The gap is architectural: where evidence lives, who owns the boundary, how the SSP is produced, and whether the platform itself is in scope. When those answers are "not us," you need CMMC-native tooling.

If you want to see what a CMMC-native stack looks like against your actual infrastructure, the 30-minute scan is the fastest way in.