Why POA&M Development Errors Are a Bigger Problem Than Most Contractors Realize
A Plan of Action and Milestones is not a formality. For federal contractors and agencies pursuing an Authorization to Operate under FISMA, FedRAMP, or CMMC, the POA&M is a living document that authorizing officials and assessors scrutinize closely. A weak or poorly constructed POA&M does not just reflect badly on your security program — it can stall your authorization for months, trigger remediation cycles, or cause assessors to question the integrity of your entire compliance posture.
In my work with defense contractors and federal agencies, I see the same POA&M development mistakes repeated across organizations of every size. Most of these errors are avoidable. This post breaks down the most common problems and, more importantly, how to correct them before they cost you time and contract eligibility.
Error 1: Treating the POA&M as a Static Checklist
The most fundamental mistake I see is organizations that build a POA&M at the start of an assessment cycle and then file it away. A POA&M is not a one-time deliverable. It is a dynamic risk management tool that should be updated continuously as vulnerabilities are identified, remediated, or reprioritized.
Authorizing officials expect to see evidence that your organization actively manages open items. If your POA&M shows the same unresolved findings from twelve months ago with no status updates, milestone revisions, or documented progress, you are signaling that your security program lacks operational discipline. That is a serious red flag during authorization reviews.
The fix: Assign a POA&M owner who is accountable for monthly status reviews. Establish a cadence for updating milestone dates, documenting remediation progress, and closing items when controls are fully implemented. Treat the POA&M as a board-level risk document, not an IT department artifact.
Error 2: Vague or Unmeasurable Milestones
Milestone entries like "patch systems" or "update access controls" tell a reviewer nothing about what is actually being done, by whom, or by when. Vague milestones are one of the top reasons POA&M packages are sent back for revision before an authorization decision is made.
Each milestone must be specific, time-bound, and tied to a named responsible party. Reviewers need to see that your organization understands what remediation actually requires, not just that a gap exists.
The fix: Write milestones using this structure: a specific action, the system or control family affected, the responsible individual or team, and a realistic completion date. For example: "Deploy multi-factor authentication for all privileged accounts in the CUI environment — IT Security Team — completion by [specific date]." That level of specificity demonstrates program maturity.
Error 3: Inaccurate or Inflated Risk Ratings
Risk ratings in a POA&M should reflect a genuine assessment of likelihood and impact, not a best-case interpretation of your exposure. Organizations frequently downgrade findings to avoid the scrutiny that high or critical items attract. Authorizing officials are experienced enough to recognize when risk ratings are inconsistent with the actual findings, and that inconsistency damages your credibility.
Conversely, some organizations assign uniform "high" ratings across all findings without differentiating based on actual threat context or compensating controls. That approach makes it impossible for reviewers to understand which items genuinely require urgent attention.
The fix: Use a documented, repeatable methodology for risk scoring — ideally aligned to NIST SP 800-30 or your agency's approved risk framework. Your risk assessment process should feed directly into your POA&M risk ratings so that scoring decisions are traceable and defensible.
Error 4: Failing to Link POA&M Items to Specific Control Deficiencies
A POA&M item that says "encryption is not fully implemented" without referencing the specific control requirement — whether that is NIST SP 800-171 control 3.13.10, CMMC practice AC.L2-3.1.3, or a specific NIST SP 800-53 control — gives reviewers no way to evaluate whether the remediation plan actually closes the identified gap.
This is especially problematic during CMMC assessments and FedRAMP authorization reviews, where assessors map every POA&M item against specific practices or controls. If the mapping is missing or incorrect, items will be flagged during the review and the package will require revision.
The fix: Every POA&M entry must reference the specific control identifier, the assessment finding that generated the item, and the system or boundary where the deficiency exists. Consider maintaining a cross-reference matrix that ties your System Security Plan and POA&M to your control families so that gaps and their remediation paths are always traceable.
Error 5: Missing or Unrealistic Completion Dates
POA&M items with no completion dates, or with dates that have already passed without status updates, are among the fastest ways to lose an authorizing official's confidence. Both omissions suggest that your organization is not actively managing its risk posture.
On the other end of the spectrum, I regularly see organizations set completion dates that are completely unrealistic — either too aggressive given resource constraints or stretched so far into the future that they suggest the organization has no real intention of remediating the finding.
The fix: Set completion dates that reflect what is actually achievable given your budget, staffing, and technical complexity. If a remediation will require significant investment or phased implementation, document that rationale. Break large remediations into interim milestones so reviewers can see incremental progress. If dates slip, update them immediately with a documented explanation — do not allow items to silently age past their scheduled completion.
Error 6: Not Documenting Compensating Controls
When a control deficiency cannot be fully remediated within a reasonable timeframe, compensating controls can reduce risk in the interim. But those controls must be explicitly documented in the POA&M. Simply noting that a finding is "in progress" without explaining what risk reduction measures are currently in place leaves reviewers with no assurance that the exposure is being managed.
This is particularly relevant for organizations pursuing CMMC, CUI, and DFARS compliance, where assessors evaluate not just whether controls are fully implemented but also whether the organization is managing risk responsibly during remediation periods.
The fix: For every open POA&M item, document any compensating or mitigating controls currently in place. Describe what the control is, how it reduces the risk associated with the open finding, and why it is an acceptable interim measure. This demonstrates security program maturity and gives authorizing officials the confidence to proceed with authorization while remediation continues.
Error 7: Treating the POA&M as Separate from the Broader Compliance Program
POA&M development does not happen in isolation. When organizations manage their POA&M as a standalone document disconnected from their risk assessments, system security plans, vulnerability management program, and continuous monitoring activities, they create version control problems and traceability gaps that slow down every authorization review.
Authorizing officials expect to see a coherent security program where findings from assessments flow into the POA&M, remediation is tracked against the SSP, and ongoing monitoring feeds back into risk ratings. If those connections are not evident, the program looks reactive rather than managed.
The fix: Integrate POA&M development into your broader compliance program development from the outset. Establish governance procedures that define how findings from vulnerability scans, penetration tests, and control assessments are ingested into the POA&M. Assign clear ownership across your IT, security, and compliance teams so that updates are timely and consistent.
Error 8: Inadequate Executive Visibility and Accountability
In many organizations, the POA&M lives entirely within the IT department and never reaches senior leadership in a meaningful way. That creates accountability gaps. When no executive is reviewing open items, approving resource allocations for remediation, or tracking progress against scheduled milestones, remediations stall and authorizations are delayed.
Authorizing officials notice when POA&M items linger for quarters or years without progress. In many cases, the root cause is simply that no one in leadership has been held accountable for driving closure.
The fix: Establish a monthly or quarterly governance review where senior leadership receives a POA&M status briefing. Organizations that engage regulatory vCISO services often find this gap closes quickly, because an experienced security leader can translate POA&M status into business risk language that resonates with executives and drives the resource decisions needed to move items forward.
Building a POA&M That Survives Scrutiny
A well-constructed POA&M demonstrates that your organization understands its security gaps, is actively working to close them, and is managing residual risk responsibly in the interim. That is the message authorizing officials need to receive before granting an ATO. When POA&M development is treated as a compliance checkbox rather than an operational discipline, authorization delays are nearly inevitable.
The good news is that most of these errors are correctable with the right process, governance structure, and expertise in place. Whether you are preparing for a FISMA annual assessment, a FedRAMP authorization package submission, or a CMMC Level 2 or Level 3 certification, investing in POA&M quality is one of the highest-return activities your compliance program can undertake. For additional context on what a complete authorization package should look like, review our guidance on building a POA&M that satisfies FISMA, FedRAMP, and CMMC reviewers.
Get Expert Help With POA&M Development
If your organization is preparing for an authorization review and needs experienced support building, reviewing, or remediating your POA&M, Cleared Systems is ready to help. Our team works directly with defense contractors, federal agencies, and regulated organizations across the federal and defense sector to develop POA&M documentation that holds up under the most rigorous assessments. Contact us today to request a quote or explore our engagement models to find the right level of support for your program.