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CMMC Regulatory Timeline

Every major CMMC milestone from initial rulemaking to full enforcement — so you know exactly where we are and how much time you have left.

Full Level 2 Enforcement Deadline

November 1, 2026

231

days remaining (~8 months)

RulemakingCertificationEnforcementStandard
Sep 2020Rulemaking

CMMC 1.0 Published

The Department of Defense released the initial Cybersecurity Maturity Model Certification (CMMC) framework with 5 maturity levels and 171 practices across 17 domains.

Nov 2021Rulemaking

CMMC 2.0 Announced

DoD streamlined the framework from 5 levels to 3, aligning Level 2 directly with NIST SP 800-171 Rev 2's 110 controls. Eliminated CMMC-unique practices and reduced burden on small businesses.

Dec 2023Rulemaking

CMMC Proposed Rule Published

The CMMC proposed rule (32 CFR Part 170) was published in the Federal Register, opening a 60-day public comment period. Over 2,500 comments were received from industry stakeholders.

May 2024Standard

NIST SP 800-171 Rev 3 Published

NIST released Revision 3 of SP 800-171, reorganizing controls and adding new requirements. CMMC Level 2 currently maps to Rev 2; DoD plans to transition to Rev 3 in a future rulemaking.

Oct 2024Rulemaking

CMMC Final Rule Published

The CMMC final rule (32 CFR Part 170) was published in the Federal Register, establishing the program's regulatory foundation. Effective December 16, 2024.

Dec 2024Enforcement

CMMC Phase 1 Begins

Phase 1 implementation started — self-assessments are now required for CMMC Level 1 (Federal Contract Information) and select Level 2 contracts. Contractors must submit self-assessment scores to SPRS.

Mid 2025Certification

First C3PAOs Authorized

The Cyber AB (formerly the CMMC Accreditation Body) authorized the first Certified Third-Party Assessment Organizations (C3PAOs) to conduct official Level 2 assessments.

Q1 2026EnforcementWe Are Here

CMMC Phase 2 — C3PAO Assessments Begin

Phase 2 requires third-party C3PAO assessments for CMMC Level 2 certification on applicable contracts. This is the current phase — contractors handling CUI must demonstrate compliance through formal assessment.

Nov 2026Enforcement

Full CMMC Level 2 Enforcement

CMMC Level 2 certification becomes a requirement in all new DoD contracts involving CUI. Contractors without certification will be ineligible to bid on or perform these contracts.

2027Enforcement

CMMC in All Applicable DoD Contracts

CMMC requirements will be included in all applicable DoD contracts, including option periods and renewals. The full Defense Industrial Base must be compliant.

~2028Standard

Expected Transition to NIST 800-171 Rev 3

DoD is expected to update CMMC Level 2 requirements to align with NIST SP 800-171 Revision 3, introducing reorganized control families and new security requirements.

Don't Wait Until It's Too Late

With only 231 days until full CMMC Level 2 enforcement, now is the time to assess your readiness. Start with a free 110-control self-assessment and real-time SPRS score.

Assess Your Readiness for Free