CMMC Ready — CMMC Level 2
89% NIST 800-171 coverage. 2 control gaps identified.
CMMC Status
CMMC Ready
Target Level
Level 2
NIST Coverage
89%
Tenable Government
by Tenable
Overview
Tenable Government by Tenable is a cybersecurity solution with FedRAMP authorization targeting CMMC Level 2 compliance. It provides 89% coverage of NIST 800-171 controls for defense contractors handling CUI.
What This Means for Defense Contractors
Tenable Government meets the architectural requirements for CMMC Level 2. However, CMMC compliance depends on your entire system boundary — not just individual tools. There are 2 NIST 800-171 control gaps that need remediation before assessment. Defense contractors using Tenable Government should verify that their System Security Plan (SSP) documents how this tool fits within their authorization boundary.
NIST 800-171 Coverage
Control Gaps
Using Tenable Government without addressing these NIST 800-171 controls may result in findings during a CMMC assessment:
Strengths
Using Tenable Government in a CMMC Environment
For defense contractors already using Tenable Government, the path to CMMC compliance involves documenting the tool in your System Security Plan (SSP), ensuring proper access controls are configured, and validating that Tenable Government's security controls align with your authorization boundary. With 89% NIST 800-171 coverage, Tenable Government provides a strong compliance foundation, though the 2 remaining control gaps will need compensating controls or supplementary tools.
CMMC-Ready Cybersecurity Alternatives
CMMC Compliance Analysis for Tenable Government
Tenable Government demonstrates strong CMMC Level 2 readiness with 89% NIST 800-171 coverage, making it a viable vulnerability management solution for defense contractors handling CUI. The platform excels in System and Information Integrity (3.14.x) controls through continuous vulnerability scanning and Assessment, Authorization, and Monitoring (3.12.x) controls via comprehensive asset discovery and security monitoring. Its FedRAMP High authorization indicates robust handling of CUI data flows typical in defense contractor environments, including network scanning of systems containing technical data and program information. During a C3PAO assessment, evaluators would focus on Tenable Government's configuration management integration and incident response capabilities, particularly examining how vulnerability data correlates with System and Communications Protection controls. The platform can operate within the CMMC authorization boundary as it's designed for government environments and maintains appropriate security controls. However, gaps in System and Services Acquisition (3.1.20) and Audit and Accountability (3.3.1) require careful attention. Compared to competitors like Rapid7 InsightVM or Qualys VMDR, Tenable Government's FedRAMP High authorization provides superior compliance positioning, though it requires additional tooling for complete NIST 800-171 coverage. The DoD SRG IL4/IL5 support positions it favorably for higher-level defense contractor requirements, while FIPS 140-2 validated encryption ensures cryptographic compliance. C3PAOs typically view Tenable Government favorably due to its government-specific design and comprehensive documentation supporting evidence collection for vulnerability management practices.
Configuration Guide
Configure Tenable Government with enhanced logging to address 3.3.1 audit requirements by enabling detailed vulnerability scan logs, user activity tracking, and system access monitoring with 90-day retention minimum. Implement compensating controls for 3.1.20 by establishing documented procedures linking vulnerability management to the System Development Life Cycle, including requirements for security control verification during system acquisitions and updates. Configure automated reporting dashboards showing vulnerability remediation metrics tied to POA&M entries and risk management frameworks. Enable integration with existing SIEM solutions to ensure audit log forwarding and correlation with security events. Timeline estimate: 4-6 weeks for initial configuration and compensating control implementation, followed by 2-3 weeks for documentation and testing. Establish continuous monitoring through weekly vulnerability scan schedules, monthly compliance reports, and quarterly configuration reviews. Maintain compliance through regular policy updates, staff training on new features, and coordination with C3PAO for ongoing assessment readiness. Prepare evidence packages including vulnerability management policies, scan reports, remediation tracking spreadsheets, user access logs, and integration documentation. Document all compensating controls in the System Security Plan with specific references to Tenable Government's role in the overall security architecture and CUI protection strategy.
Configuration Checklist
- 1ISSO: Configure Tenable Government audit logging to capture user authentication, vulnerability scan initiation, and report generation for NIST 3.3.1 compliance
- 2Sysadmin: Enable FIPS 140-2 encryption mode and configure secure communications channels for CUI data protection per NIST 3.13.11
- 3ISSO: Implement automated vulnerability scanning schedules covering all systems within CMMC boundary per NIST 3.14.1 requirements
- 4ISSO: Document compensating controls for NIST 3.1.20 in SSP Section 10, linking vulnerability management to acquisition processes
- 5Sysadmin: Integrate Tenable Government with existing SIEM solution for centralized audit log collection and correlation
- 6ISSO: Create POA&M entries for identified gaps (3.1.20, 3.3.1) with specific remediation timelines and responsible parties
- 7ISSO: Establish weekly vulnerability reporting procedures and monthly compliance dashboards for continuous monitoring evidence
- 8Contracts: Verify Tenable Government licensing covers all in-scope systems and includes necessary FedRAMP High features
- 9C3PAO: Review vulnerability management procedures and evidence collection processes during pre-assessment activities
- 10ISSO: Train security staff on Tenable Government compliance features and evidence generation for ongoing assessment readiness
Estimated Compliance Cost
Initial setup and remediation costs range from $15,000-$25,000 including professional services for configuration, integration, and compensating control implementation. Annual ongoing costs include licensing ($20,000-$40,000 depending on asset count), managed services for continuous monitoring ($12,000-$18,000), and internal labor for maintenance (0.25 FTE ISSO time, approximately $25,000). Additional costs for C3PAO assessment preparation include documentation review ($3,000-$5,000) and potential gap remediation for missing controls ($5,000-$10,000). Total first-year investment: $75,000-$125,000. Subsequent years: $60,000-$90,000. Timeline spans 6-8 weeks for full implementation and assessment readiness. Cost efficiencies achieved through FedRAMP authorization reducing assessment overhead and integrated reporting capabilities streamlining evidence collection processes.
Compliance Cross-References
Tenable Government directly supports DFARS 252.204-7012 adequate security requirements through continuous vulnerability management and security monitoring capabilities, while addressing DFARS 252.204-7021 through comprehensive asset inventory and security assessment features. The platform's FedRAMP High authorization aligns with stringent government security requirements, providing assurance for CUI handling within defense contractor environments. Gaps in NIST 800-171 controls 3.1.20 (System and Services Acquisition) and 3.3.1 (Audit and Accountability) require documented compensating controls and additional procedures. CMMC Level 2 assessment domains benefit from Tenable Government's strong coverage in System and Information Integrity (SI), Assessment Authorization and Monitoring (CA), and System and Communications Protection (SC) practice areas. The vulnerability management capabilities directly support AC (Access Control) and CM (Configuration Management) domains through asset discovery and security posture monitoring. FedRAMP requirements intersect favorably with CMMC assessment criteria, as both frameworks emphasize continuous monitoring, incident response, and security control validation. Defense contractors can leverage Tenable Government's government-specific design to satisfy multiple compliance frameworks simultaneously, reducing overall assessment burden while maintaining robust CUI protection standards.
Related Compliance Assessments
Frequently Asked Questions
Is Tenable Government CMMC compliant?
Tenable Government meets CMMC Level 2 requirements with 89% NIST 800-171 control coverage.
What NIST 800-171 controls does Tenable Government cover?
Tenable Government covers 89% of the 110 NIST 800-171 controls, with 2 gaps primarily in 3.1.20 and 3.3.1 control families.
What are the CMMC compliance gaps for Tenable Government?
The primary gaps are in controls 3.1.20, 3.3.1. These require supplementary tools or process controls to achieve full CMMC Level 2 compliance.
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