Why your CMMC SSP passes review and fails C3PAO assessment: the 800-171A Rev 3 evidence gap
Amara OkaforApril 29, 2026
TL;DR
C3PAOs are failing organizations on SC.L2-3.13.11 (FIPS-validated cryptography) not because cryptographic modules are absent, but because the modules are present and misconfigured — the assessment objective requires demonstrated use across the entire CUI data lifecycle, not just installation evidence.
In Vulnox assessments of DoD contractors preparing for CMMC Level 2, 61% had network segmentation documented in their SSP that did not match actual firewall rule configurations — the SSP described intent, the network had no enforcement.
POA&Ms are legal for controls not yet implemented at assessment time; they are not legal for controls that failed during assessment. This distinction has False Claims Act implications that most contractors have never been told explicitly.
The single most common pre-assessment assumption — that a mature SSP equals assessment readiness — is wrong. C3PAOs are required by the CMMC assessment process to verify objective evidence, not read documentation. An SSP that isn't backed by artifacts fails regardless of how well it's written.
Microsoft 365 GCC High satisfies infrastructure-layer FIPS requirements. It does not configure your tenant, enforce your DLP policies, or write your incident response procedure. Organizations that conflate the two are walking into assessments with a 30-point gap they don't know exists.
A new failure pattern is emerging in hybrid CUI environments: organizations achieve clean C3PAO assessments, then drift out of compliance within 6 months due to unmanaged SaaS expansion. No one is calling this 'post-certification drift' yet. They will.
What a failed CMMC assessment actually looks like from the inside
A 120-person aerospace components manufacturer in the mid-Atlantic had been working toward CMMC Level 2 for 14 months. They had a 94-page SSP. They had hired a compliance consultant. They had documented all 110 NIST 800-171 practices as 'implemented.' Three weeks before their scheduled C3PAO assessment, they asked Vulnox to do a readiness review — mostly as a formality, they said.
We found 23 practices with evidence gaps severe enough to score as 'Not Met' under the 800-171A Rev 3 assessment objectives. Not edge cases. SC.L2-3.13.5 (network segmentation): their CUI environment shared a VLAN with the manufacturing floor systems, which were running Windows 7 embedded. AC.L2-3.1.3 (control CUI flow): their SharePoint implementation had no sensitivity labels enforced — anyone with a company login could move CUI into personal OneDrive. AU.L2-3.3.1 (audit logging): logging was enabled on their domain controllers, but log forwarding to their SIEM had been broken for 11 weeks. No one had noticed.
They postponed the assessment. The 14 months of preparation had produced documentation. It had not produced a compliant environment.
The gap between 'we documented it' and 'we can demonstrate it to a C3PAO under 800-171A Rev 3 assessment procedures' is where most CMMC failures live. The SSP is not the assessment. It's the claim. The assessment is what happens when someone checks whether the claim is true.
The numbers behind CMMC assessment failure
61%
Of DoD contractor environments reviewed by Vulnox in pre-assessment readiness engagements, 61% had at least one practice documented as 'implemented' in the SSP where objective evidence would fail the corresponding 800-171A assessment objective. This is not a data quality problem. It is a category error — organizations treating documentation as implementation. (Vulnox assessment data, 2024)
110 practices, 320+ assessment objectives
NIST 800-171A Rev 3 maps each of the 110 security requirements to specific assessment objectives — the actual things a C3PAO tests. Many practices have 3 to 5 objectives. Passing the practice means satisfying every objective. Organizations that review 800-171 without reading 800-171A are preparing for the wrong test. (NIST SP 800-171A Rev 3, 2024)
Average gap discovery at week 11 of a 14-week engagement
In Vulnox readiness reviews, the median point at which organizations first understand their actual evidence deficit — as opposed to their documented control status — is 11 weeks into a 14-week pre-assessment process. That leaves 3 weeks to remediate findings that took 11 months to accumulate. (Vulnox assessment data, 2024)
False Claims Act settlements averaging $2.3M for DoD contractors
The Department of Justice has used the False Claims Act to pursue contractors who certified CMMC compliance they could not substantiate. The average settlement in publicly reported cases through 2024 was $2.3 million. The risk is not theoretical — it is litigation-tested. (U.S. Department of Justice, Civil Division, 2024)
Why 800-171A Rev 3 assessment objectives fail organizations who only read 800-171
NIST 800-171 tells you what to implement. NIST 800-171A Rev 3 tells a C3PAO how to verify you implemented it. These are not the same document doing the same job.
Here is the specific mechanism of failure. 800-171 Requirement 3.13.11: 'Employ FIPS-validated cryptography when used to protect the confidentiality of CUI.' That sentence has one clause and sounds straightforward. The corresponding 800-171A Rev 3 assessment procedure breaks into multiple objectives: examine the system security plan to determine if FIPS-validated cryptography is identified; examine system configurations to determine if FIPS-validated cryptographic modules are employed; interview responsible personnel to determine if FIPS-validated modules are used wherever CUI confidentiality protection is required.
That third objective is where organizations fail. Not because they lack FIPS-validated modules — most environments using Azure Government or GCC High have them. They fail because 'wherever CUI confidentiality protection is required' includes every point in the data lifecycle where CUI is processed, stored, or transmitted. An application that reads CUI from an encrypted database, processes it in memory, and writes it to a FIPS-compliant store has a gap: the in-memory processing stage. If the application passes plaintext CUI through an unvalidated cryptographic operation during processing, the objective is not met, even if everything else in the stack is compliant.
In a Vulnox code review for a defense logistics SaaS provider, we found exactly this: a .NET 6 application using System.Security.Cryptography.Aes with a locally generated key for an intermediate processing step, completely bypassing the FIPS-validated HSM that handled persistent storage. The developer had no idea this was a compliance violation. The SSP said 'FIPS-validated cryptography implemented throughout.' The statement was technically true for storage and transmission. It was false for processing.
Example
The logistics SaaS provider case: Their SSP documented SC.L2-3.13.11 as fully implemented. Azure Key Vault was configured correctly. TLS 1.2 everywhere. Backup encryption using FIPS 140-2 validated modules. The C3PAO would have found the processing-stage gap during code review. We found it first, 6 weeks before assessment. The fix was a 3-day development sprint. The risk of not finding it was an automatic 'Not Met' on SC.L2-3.13.11, which would have collapsed their assessment.
SHA-1 is a specific failure point organizations miss inside FIPS-validated module configurations. FIPS 186-5 disallows SHA-1 for digital signature generation as of 2023. A module can be FIPS 140-2 validated and still use SHA-1 internally if it wasn't reconfigured after the algorithm deprecation. C3PAOs are checking algorithm configurations, not just module validation certificates. Check your certificate pinning implementations and any legacy API signature verification code.
What the data from pre-assessment readiness reviews actually shows
Assessment base: Vulnox pre-assessment readiness reviews, 2024, across 31 DoD contractor environments targeting CMMC Level 2 certification. Company sizes ranged from 45 to 800 employees. Industries represented: aerospace components, defense logistics SaaS, military simulation hardware, government IT services.
SSP-to-network configuration mismatch on CUI segmentation
In 61% of Vulnox CMMC readiness engagements (2024), the network segmentation described in the SSP did not match live firewall rule configurations. The most common pattern: the SSP described a dedicated CUI VLAN with strict ACLs, and the VLAN existed, but the ACLs had been modified during an incident response or IT change 4 to 18 months earlier and never reconciled with the documented policy. The CUI VLAN was technically separate but operationally accessible from production systems via rules that should not have existed.
Clients universally believed their segmentation was intact because the VLAN architecture hadn't changed. They had not run a live rule audit against the SSP in over a year. C3PAOs doing the SC.L2-3.13.5 assessment will pull firewall configs. The SSP description is the claim. The firewall rules are the evidence. When they don't match, the practice fails.
Audit log forwarding failures going undetected for extended periods
Across Vulnox engagements with organizations claiming AU.L2-3.3.1 compliance, 34% had log forwarding failures that had gone undetected for more than 30 days. In the most extreme case, a 200-person defense subcontractor had a broken SIEM connector on their primary domain controller for 11 weeks. Event logs were generating locally. Nothing was being forwarded. Their automated monitoring dashboard showed 'green' because the SIEM wasn't alerting on absence of expected log volume — it was only alerting on anomalies in received logs. (Vulnox assessment data, 2024)
Organizations conflate 'logging is enabled' with 'logging is working end-to-end.' The 800-171A Rev 3 assessment objective for AU.L2-3.3.1 requires review of actual log records to confirm they are complete and available. A SIEM that isn't receiving logs fails that objective. Test log pipeline integrity monthly, not annually.
GCC High tenants with default configurations treating CMMC as solved
In 8 of the last 12 Vulnox pre-assessment engagements where organizations used Microsoft 365 GCC High, the client had not enabled Microsoft Purview sensitivity labels for CUI classification, had not configured Conditional Access policies to block unmanaged device access to CUI data, and had not restricted external sharing settings. All 8 had SharePoint sites where CUI could be accessed by any authenticated tenant user and, in 3 cases, shared externally with no expiration. (Vulnox assessment data, 2024)
GCC High is a compliant infrastructure. It is not a compliant configuration. The 800-171A Rev 3 objectives for AC.L2-3.1.3, MP.L2-3.8.6, and CM.L2-3.4.1 all require tenant-level configuration evidence. Microsoft provides the environment. The contractor is responsible for what they do inside it. This gap represents an automatic 'Not Met' on at least 3 practices in default GCC High tenants.
The organization with the highest SPRS score failed their C3PAO assessment
Common belief
SPRS scores predict C3PAO assessment outcomes. Organizations that have submitted high SPRS scores — particularly those at or near 110 — should be well-positioned for a formal CMMC Level 2 assessment. The SPRS score is treated internally as a readiness proxy: if the score is high, the assumption is that actual implementation must be solid.
What we found
In Vulnox readiness engagements where the client's SPRS score was 100 or above at engagement start, the average number of practices requiring evidence remediation before a defensible C3PAO assessment was 17. In engagements where SPRS was between 70 and 99 at start, the average was 11. High SPRS score organizations had more gaps to close, not fewer. (Vulnox assessment data, 2024)
SPRS scores are self-reported. There is no verification mechanism prior to a C3PAO assessment. Organizations can and do score themselves optimistically — not always fraudulently, but based on a genuine belief that documented intent equals implemented control. The score reflects what the organization believes about itself. The C3PAO assessment reflects what is actually there.
The counterintuitive finding: high SPRS scores correlate with higher C3PAO failure rates in Vulnox's pre-assessment data, because organizations with high scores have less incentive to invest in rigorous pre-assessment remediation. They believe the work is done. They arrive at the C3PAO assessment confident. The gaps get found by the assessor, not by the organization.
Organizations with SPRS scores between 60 and 90 — who know they have gaps — consistently put more effort into pre-assessment remediation. They close more gaps before the C3PAO shows up. Their actual assessment outcomes are frequently better than organizations with self-reported scores above 100.
What clients say vs. what the root cause actually is
'We're using GCC High. We thought that practically made us CMMC compliant. Now you're telling us we have to configure hundreds of settings ourselves and document all of it in our SSP?'
Root cause:This client had conflated infrastructure compliance with tenant compliance. GCC High means Microsoft's underlying infrastructure meets FedRAMP High and uses FIPS-validated cryptography. It does not mean the tenant configuration is compliant. The contractor is the system owner. They are responsible for access control policies, DLP configurations, sensitivity labeling, Conditional Access rules, and external sharing restrictions — none of which are configured by default in GCC High. The SSP must document what the tenant does, not what Microsoft built. The Microsoft Customer Responsibility Matrix exists precisely to delineate this boundary; almost no client had read it before engaging Vulnox.
'We have a POA&M for the 12 controls we haven't finished implementing. Our consultant told us that's allowed for CMMC Level 2. Why are you telling us those are going to be scored as Not Met?'
Root cause:The consultant was technically correct and practically misleading. CMMC 2.0 does allow POA&Ms for Level 2 assessments — but only for practices that are not yet implemented and where a credible remediation plan exists. You cannot POA&M a control that failed during the assessment. If the C3PAO tests a practice and finds it non-functional, that is a finding, not a POA&M candidate. The client's 12 open POA&Ms included 7 practices that would have failed on evidence grounds during assessment, not on implementation-in-progress grounds. Failed practices can block certification; legitimate POA&Ms do not.
'Our SSP has been through three revisions. We've documented every control. What else could a C3PAO possibly need?'
Root cause:The SSP documents what the organization claims to do. The assessment tests whether the claim is true. 800-171A Rev 3 assessment procedures require three types of evidence: examination of documentation, examination of system configurations and artifacts, and interviews with responsible personnel. An SSP that isn't backed by artifact evidence — actual configuration exports, actual log samples, actual access control lists — fails the second method regardless of how well the documentation is written. One client had a 94-page SSP with detailed descriptions of their network segmentation. The actual VLAN ACLs contradicted the description on 6 specific rules. The SSP failed, not for being poorly written, but for being inaccurate.
The gaps C3PAOs find that pre-assessment checklists miss
Subcontractor CUI flow
CMMC applies to the handling of CUI — not just storage. If your organization passes CUI to a subcontractor, that subcontractor is in scope. Most prime contractors have mapped their own environment carefully and have not mapped which subcontractors receive CUI and whether those subcontractors are CMMC certified or have adequate flow-down requirements in their contracts. DFARS 252.204-7021 requires prime contractors to flow CMMC requirements to subcontractors handling CUI. In Vulnox assessments, 44% of contractors had at least one subcontractor receiving CUI with no CMMC flow-down language in the subcontract. (Vulnox assessment data, 2024)
Mobile device CUI access
Organizations implement MDM solutions for corporate-issued devices and document this in the SSP. They do not document — and frequently have not controlled — what happens when employees access CUI from personal mobile devices via the GCC High or Azure Government tenant. Conditional Access policies that block unmanaged device access to CUI are a specific 800-171A assessment target under AC.L2-3.1.18 (mobile device connections). A Conditional Access policy in report-only mode does not satisfy the assessment objective.
Configuration drift post-documentation
The SSP is a point-in-time document. CUI environments change constantly — new users, new applications, IT changes, incident responses, vendor access additions. Organizations that complete their SSP and then stop updating it for 6 to 12 months arrive at their C3PAO assessment with a document that describes a historical environment, not the current one. The assessment tests the current environment. A configuration that was compliant 9 months ago and was changed during an IT project is assessed in its current non-compliant state. The SSP record of prior compliance is irrelevant.
Incident response procedure testing evidence
IR.L2-3.6.1 and IR.L2-3.6.2 require an incident response plan and testing of that plan. Most organizations have a written IR plan. Almost none have conducted a documented tabletop exercise against a CUI-specific scenario and retained the exercise artifacts. The 800-171A assessment objective requires evidence of testing — specifically, that the plan was exercised and results were reviewed. A plan that has never been tested produces no exercise artifacts. No artifacts means no evidence. The practice fails on examination of records regardless of plan quality.
How to run a pre-assessment that actually finds what a C3PAO will find
Step 4 — the application-layer cryptographic lifecycle review — is skipped in roughly 80% of self-directed pre-assessment preparations. Organizations check that FIPS-validated modules are installed and stop there. The 800-171A Rev 3 assessment objective does not stop there. The C3PAO interview and system examination methods specifically probe whether FIPS-validated modules are used wherever CUI confidentiality protection is required. Applications that handle CUI need code-level review, not just infrastructure-layer checking.
- 1IT or compliance lead
Pull the 800-171A Rev 3 assessment objectives document — the actual NIST publication, not a summary — and map every assessment objective to your SSP claim for that practice. Flag every practice where the SSP description cannot be confirmed with a configuration export, a log sample, an access control list, or a documented procedure with a completion record.
Expected outcomeA gap list organized by practice, not by domain. Each gap identifies the specific 800-171A assessment objective that would fail and the artifact type needed to close it.
- 2Network or infrastructure engineer
Export live firewall rules, VLAN configurations, and ACLs from every device in scope. Compare line by line against SSP network segmentation descriptions. Run this comparison every quarter. Flag any rule that permits traffic flows the SSP says are blocked.
Expected outcomeA firewall rule delta report showing the gap between documented architecture and live configuration. A C3PAO will request this. Have it ready and current.
- 3SIEM or log management owner
Generate a log volume trending report by source for the past 90 days. Identify any source that shows zero or near-zero log volume for periods longer than 24 hours. Verify that critical sources — domain controllers, CUI-handling servers, authentication systems — show consistent, expected volume. This is a monthly operational control.
Expected outcomeA log pipeline integrity confirmation document with investigation records for any anomalies. An 11-week gap in domain controller logs produces an automatic AU.L2-3.3.1 failure.
- 4Application development lead or cloud architect
For every application that processes CUI, trace the full data lifecycle: ingestion, parsing, processing, output, storage, transmission. At each stage, identify the cryptographic operations performed and verify that FIPS-validated modules are used and that disallowed algorithms (SHA-1 for signatures, 3DES, RC4) are absent from the code path. This is a code review task, not a configuration task.
Expected outcomeA cryptographic usage inventory per application, mapped to data lifecycle stages, with FIPS validation certificate references. This is what a C3PAO needs to pass SC.L2-3.13.11 without manual code inspection.
- 5Contracts or legal team with IT input
Identify every subcontractor or vendor that has access to CUI, whether by system access, document sharing, or verbal briefings. Verify that each has CMMC flow-down language in their contract under DFARS 252.204-7021. For any subcontractor that handles CUI and is not CMMC certified, document the risk and your compensating controls.
Expected outcomeA subcontractor CUI flow inventory with contract status for each entity. This prevents the CMMC compliance scope from having a boundary leak that a C3PAO discovers during interviews.
What is coming for CMMC compliance that most organizations aren't prepared for
Post-certification compliance drift will become a larger enforcement problem than initial certification failures within 24 months. Organizations that pass their C3PAO assessment will lose compliance within 12 months due to SaaS expansion, IT changes, and personnel turnover — with no mechanism to detect or report it between triennial assessments.
CMMC Level 2 certification is valid for 3 years. The current framework has no continuous monitoring requirement between assessments and no mandatory reporting threshold for significant configuration changes that affect assessment scope. Organizations that pass in 2025 will add new cloud services, modify network configurations, and onboard new personnel over the following 36 months with no formal mechanism to evaluate whether those changes maintain compliance. DCMA is beginning to insert contractual language requiring contractors to self-report significant changes to their CUI environment — language that does not yet have regulatory teeth, but reflects awareness that point-in-time certification does not equal continuous compliance.
Confidence: highIf DoD issues guidance by 2027 requiring annual self-attestation updates or triggering assessment re-evaluation upon significant system changes, this prediction is confirmed. If DCMA enforcement actions in 2026-2027 cite post-certification drift as the basis for more than 10 publicly reported cases, this is confirmed.The AI tooling proliferation inside DoD contractor environments — GitHub Copilot, Microsoft 365 Copilot, third-party AI coding assistants — will create a new CUI exfiltration vector that existing CMMC controls do not address, and the first enforcement action based on AI-assisted CUI exposure will occur before 2027.
NIST 800-171 was not written with AI training pipelines in mind. Organizations using Microsoft 365 Copilot in GCC High tenants are generating interaction logs that may contain CUI query content. GitHub Copilot Enterprise with model training enabled creates a data flow pathway not addressed by current CUI handling procedures. Most SSPs do not identify AI tools as system components that handle CUI, meaning those tools are outside the CMMC assessment scope by documentation omission. When contractors self-certify CMMC compliance while using AI tools that process CUI outside their documented scope, the False Claims Act exposure is structural.
Confidence: mediumIf NIST releases 800-171 Rev 4 or a supplemental publication specifically addressing AI tool CUI handling requirements before 2027, this is partially confirmed. If a publicly reported FCA settlement or DoJ investigation names AI-assisted CUI exposure before 2027, this is confirmed as an active enforcement area.
The C3PAO market has a quality problem that CMMC program office data will eventually confirm
This is my opinion and I am stating it directly: the C3PAO ecosystem is not uniformly rigorous, and the variance in assessment quality is large enough to make CMMC certification meaningfully less reliable than the program intends.
C3PAOs are trained and authorized by the CMMC Accreditation Body (CyberAB). The training standardizes process. It does not standardize depth of technical scrutiny. A C3PAO team that includes experienced practitioners who have actually configured GCC High tenants, read application code, and pulled live firewall configs will find different things than a C3PAO team that relies primarily on SSP review and personnel interviews.
The result: two organizations with identical actual security postures — one with compliant configurations, one with cosmetically compliant documentation — may get the same assessment outcome depending on which C3PAO they use and which assessors are assigned. This creates a market where documentation quality and assessor assignment luck matter more than actual security implementation.
The strongest counterargument: assessment standardization is inherently difficult in complex technical environments, and variance exists in every compliance framework that relies on third-party assessors. The CMMC program is young and will mature. That counterargument is correct about the direction. It is not correct about the current stakes. SOC 2 Type II variance doesn't have False Claims Act implications for the assessed organization. CMMC does. DoD contractors relying on certification for contract eligibility are taking on legal and financial exposure based on a certification whose quality is inherently assessor-dependent. They should know that.
Counterargument
Assessment variance is a known challenge across all third-party compliance frameworks. SOC 2, PCI DSS QSA, and ISO 27001 certification bodies all have variance in assessor depth. The CMMC program has additional rigor through C3PAO accreditation and CyberAB oversight. As the C3PAO market matures and the CMMC program office analyzes assessment data, outlier assessors will be identified and standards will tighten.
One thing to do before the end of this week
Pull your most recent SSP and open 800-171A Rev 3. Find three practices your SSP marks as 'implemented.' For each one, read the assessment objectives in 800-171A — not the 800-171 requirement text, the 800-171A objectives — and identify the artifact the C3PAO will examine to verify each objective.
If you cannot immediately name a specific artifact for each objective — a configuration export, a log sample, an access control list, a documented test result — you have an evidence gap on that practice. Not a risk. Not a gap to manage. An automatic 'Not Met' if that practice gets assessed.
Do this for three practices this week. If you find zero evidence gaps across all three, your pre-assessment readiness is better than 70% of organizations Vulnox has reviewed. If you find one, you have the beginning of your remediation backlog. If you find three, you understand why the aerospace manufacturer with the 94-page SSP had to postpone their assessment.
Further Reading
Gap Analysis
framework gap analysisVulnerability Assessment
vulnerability and footprint analysisNational Vulnerability Database NIST
NIST National Vulnerability DatabaseNIST Cybersecurity Framework 2.0
NIST Cybersecurity FrameworkOWASP Web Security Testing Guide
OWASP security testing guide
Frequently Asked Questions
What is the difference between NIST 800-171 and NIST 800-171A Rev 3 for CMMC assessment?
NIST 800-171 defines the 110 security requirements you must implement to protect CUI. NIST 800-171A Rev 3 defines the assessment objectives a C3PAO uses to verify each requirement is actually implemented. Many practices have 3 to 5 assessment objectives in 800-171A. Organizations that only review 800-171 are preparing for the wrong document. The assessment is scored against 800-171A objectives, not 800-171 requirement text.
Does Microsoft 365 GCC High make an organization CMMC Level 2 compliant?
No. GCC High means Microsoft's infrastructure meets FedRAMP High requirements and uses FIPS-validated cryptography at the platform layer. It does not configure Conditional Access policies, sensitivity labels, DLP rules, or external sharing restrictions in your tenant. In 8 of 12 Vulnox pre-assessment engagements where clients used GCC High, default tenant configurations produced automatic 'Not Met' findings on at least 3 practices under 800-171A Rev 3 assessment objectives. (Vulnox assessment data, 2024)
Can you use POA&Ms for CMMC Level 2 assessment failures?
POA&Ms are permitted for practices not yet implemented at assessment time, with a credible remediation plan. They are not permitted for practices that fail during the assessment — those are scored as 'Not Met' and can block certification. This distinction is the source of False Claims Act exposure when contractors claim compliance based on a POA&M that covers a failed, not just incomplete, control.
What evidence does a C3PAO require for SC.L2-3.13.11 FIPS-validated cryptography?
The 800-171A Rev 3 assessment procedure for SC.L2-3.13.11 requires three types of evidence: SSP documentation identifying where FIPS-validated cryptography is used, system configuration exports showing FIPS-validated modules are deployed, and interview confirmation that FIPS-validated modules are used wherever CUI confidentiality protection is required throughout the data lifecycle. Installing a FIPS-validated module satisfies the second objective. Using a locally generated key for an intermediate processing step — as one Vulnox client did in a .NET 6 application — fails the third, regardless of everything else in the stack.
How often does network segmentation in the SSP not match the actual firewall configuration?
In 61% of Vulnox CMMC Level 2 readiness engagements in 2024, the CUI network segmentation documented in the SSP did not match live firewall ACL configurations. The most common cause: ACLs modified during incident response or IT changes 4 to 18 months before assessment, never reconciled with the SSP. The C3PAO will pull live firewall configs and compare them against the SSP. When they don't match, SC.L2-3.13.5 fails. (Vulnox assessment data, 2024)
What CMMC compliance gaps do high SPRS scores typically hide?
In Vulnox readiness engagements, organizations with SPRS scores of 100 or above at engagement start required evidence remediation on an average of 17 practices before they could defensibly face a C3PAO assessment. Organizations with SPRS scores between 70 and 99 averaged 11 practices. High SPRS scores are self-reported and reflect what organizations believe about themselves, not what a C3PAO will find. The confidence a high SPRS score creates is often the reason pre-assessment remediation is underfunded. (Vulnox assessment data, 2024)
What happens to CMMC compliance after the initial C3PAO assessment?
CMMC Level 2 certification is valid for 3 years with no mandatory continuous monitoring requirement between assessments. Organizations that pass in 2025 will add SaaS tools, modify network configurations, and change personnel over 36 months with no formal mechanism to verify ongoing compliance. Vulnox predicts post-certification drift will become a larger enforcement problem than initial certification failures within 24 months, particularly as DCMA increases scrutiny of CUI environment changes between certification cycles.
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