RA-5 Vulnerability monitoring and scanning: requirements and evidence

What RA-5 vulnerability monitoring and scanning requires in practice

When an assessor or FedRAMP reviewer asks for proof of RA-5, they want to see that you scan the system and hosted applications for vulnerabilities at a defined frequency and whenever new vulnerabilities are reported, analyze the results, remediate legitimate findings within defined response times, and share what you learned. The control is about known flaws left open, so the evidence must show the whole cycle, not just a scanner that ran once. RA-5 is a base control in the low, moderate and high baselines of SP 800-53B, and the organization owns it. The organization also sets the parameters, such as scan frequency and remediation windows, so the first task is writing those values down and proving you follow them.

The difficulty is rarely the scanner itself. Coverage gaps are common: ephemeral workloads, container images, network devices and SaaS components often fall outside the scan scope, so the scan report looks clean while large parts of the system go unexamined. Results are noisy, with duplicate findings across tools and many low-value alerts that bury the ones that matter. Ownership is often unclear, so a finding can sit in a queue with no named team accountable for fixing it. RA-5 is also assurance-related, which means an assessor will test whether the scanning and remediation process works, using scan configurations, results and remediation records as examined objects.

Start by confirming three things with your assessor or FedRAMP reviewer: the scan frequency and triggers your authorization package states, which asset classes must be in scope, and the remediation timeframes that apply to your impact level. Then check that each parameter has a matching record. Scan configuration exports, scan result history and tickets showing closure dates are the artifacts that usually answer the question. For FedRAMP work, also confirm which RA-5 enhancements your class requires, since the authorization rules set those separately from the base control.

Which systems, hosts and applications fall under RA-5 scanning

RA-5 coverage starts with the system boundary in the security plan, then extends to every component that boundary contains. The cards below walk through the asset types an assessor will expect to see in scan scope and the baseline choices that change how much of that scope needs enhancement-level work.

Endpoints and installed software

Operating systems and installed applications on servers, workstations and virtual machines are the most common scan targets. Agent-based inventory is often the only practical way to reach laptops and remote hosts that are not always on the network. Check that every host in the boundary appears in the inventory, and that the inventory is compared against the scanner's coverage so unmanaged systems are visible rather than silently excluded.

Network devices and perimeter components

Routers, firewalls, switches, load balancers and VPN concentrators sit inside the boundary and carry their own firmware and management interfaces. Network scanning can identify exposed services and outdated firmware, but device credentials and vendor-specific checks often need separate configuration. Confirm with the scanning vendor which device families its checks cover and which need manual review.

Hosted web applications and APIs

Public and internal web applications, along with their APIs, are in scope when the system hosts them. Application-layer scanning looks for flaws that host-level scans miss, such as injection points and insecure endpoints. Ask which applications the boundary includes, who owns each one, and whether authenticated sessions are available for testing behind login pages.

Containers, cloud resources and images

Container images, orchestration nodes and cloud workloads change faster than a static asset list can track. Scan the base images and packages that get deployed, not only the running instances, and record which cloud accounts, subscriptions and regions the boundary includes. Illustrative example: a container image rebuilt weekly from an unpinned base may need a scan at each build as well as on a schedule.

Third-party components the organization operates

Open-source libraries, managed services the organization configures and vendor appliances it runs are part of what RA-5 expects the organization to watch. Software composition analysis or dependency monitoring can flag known vulnerabilities in these components, but a component the organization does not operate may fall to a supplier under SA-type controls instead. Document the split in the security plan so the assessor can trace each component to an owner.

How the baseline changes scan scope

The SP 800-53B baseline selected for the system sets which RA-5 enhancements apply. The low baseline selects RA-5(2) and RA-5(11), the moderate baseline adds RA-5(5), and the high baseline adds RA-5(4). Enhancement RA-5(2) concerns updating vulnerabilities to be scanned, so a higher baseline means more frequency, more verification and more scrutiny of scan coverage. Confirm the impact level from RA-2 before sizing the scan program.

Which RA-5 enhancements each baseline selects

The low baseline selects RA-5(2) and RA-5(11) in addition to the base control. Those two enhancements are the starting point for any system categorized at low impact, and they set the floor for how the vulnerability scanning program is evaluated. Read them together with the base control, which asks for scanning at a defined frequency, for new vulnerabilities as they are reported, and for remediation within defined response times.

RA-5(2), update before scanning: Vulnerability signatures or the data behind them must be refreshed before a scan runs, so results reflect current knowledge of flaws.
RA-5(11), public disclosure program: The organization must have a way for outsiders to report vulnerabilities in its systems and act on those reports.
Evidence to collect: Dated feed or signature update records, scan configuration showing the update step, and the intake channel for external reports with its triage log.
Scope note: Low-baseline systems still need the base control's frequency and remediation timeframes, which the enhancements do not replace.

Before relying on this tab, confirm the exact frequency and response times your authorizing official accepted, and check the FedRAMP class requirements separately, because FedRAMP Rev5 classes do not map one to one onto SP 800-53B baselines.

How scan frequency, authenticated scanning and signature updates fit together

RA-5 asks for two kinds of scanning working together: scans at a frequency the organization defines, and scans triggered when new vulnerabilities are reported. The frequency values are the organization's own decision. Set them in the system's documented vulnerability scanning procedure, tie them to the system's categorization and risk assessment, and record who approved them. An assessor will compare the scan records against those stated values, so the most common failure is not a missing scanner but a documented schedule that was not followed. Before the assessment, pull the scan history for the review period and check every scheduled run and every event-driven run against the written rule. Confirm with your assessor how they expect event-driven scans to be evidenced, since the trigger is often a vendor advisory or threat feed rather than a calendar entry.

Authenticated (credentialed) scanning logs in to each target with a scan account, so the scanner can read installed packages, patch levels and configuration rather than inferring them from open ports and banners. Unauthenticated scans usually miss missing patches in installed software and local misconfigurations, which is why RA-5(2) and its counterparts appear in the baselines described on this page. Plan a dedicated, least-privilege scan account per environment, store its credentials in a secrets manager, and record which hosts failed to authenticate. A high failure rate is itself a finding, because those hosts are being assessed with less depth than the documentation implies. Open-source tools such as Greenbone Community Edition can run credentialed scans, but confirm the credential types and target coverage for your own estate before relying on them.

Scanner feeds and vulnerability signatures decide what a scan can detect. A scanner running on stale plugins or an outdated vulnerability database will report a clean result for flaws published after its last update, and that clean result will look like evidence. Document the feed update schedule, how the update is verified, and what happens when an update fails. Keep the feed version in each scan report so an assessor can connect the result to the data that produced it. Offline or air-gapped environments need a defined process for importing feed updates, and that process should be part of the evidence set. Ask your assessor which feed versions and update intervals they consider acceptable for your categorization before you commit to a schedule.

How an assessor tests RA-5 and what they ask to see

This table walks through the nine SP 800-53A determination statements for RA-5 at a conceptual level, showing the test area, the assessment method, what the assessor asks for and where findings usually appear. Read it as a preparation checklist: each row names an artifact or conversation to have ready before the assessor arrives.

Test area	Method	What the assessor asks for	Common findings
Scan frequency and triggers	Examine, interview	The defined scan frequency, the trigger for ad hoc scans when new vulnerabilities are reported, and scan job schedules or logs showing they ran	Frequency defined in policy but not matched by scheduler history, or no documented trigger for new vulnerability reports
Scanning tools and configuration	Examine	Tool inventory, versions, vulnerability check feeds, and configuration documentation showing the scanner can use interoperable enumeration and scoring standards	Tool configuration not documented, feeds not updated, or scanner versions that cannot be traced to the scan results
Scan coverage of systems and hosted applications	Examine, test	The asset inventory compared against scan target lists, including hosted applications and databases within the authorization boundary	Hosts or applications in the inventory absent from scan scope, often cloud instances or newly deployed services
Authenticated scanning	Examine, test	Credentialed scan configuration, the accounts used, and a sample scan report showing package-level findings rather than only network-level findings	Scans run unauthenticated by default, so installed software and missing patches are under-reported
Scan results and analysis	Examine	Raw scan reports, the analysis performed on them, and records of false positive decisions with their justification	Reports exist but no analyst review, or false positives closed without a recorded rationale
Remediation within defined response times	Examine, test	Tracked findings with severity, owner, due date and closure evidence, sampled against the organization's own response timeframes	Findings past due with no risk acceptance or plan of action and milestones entry
Sharing lessons learned	Examine, interview	Records showing that scan outcomes were shared with system owners, engineering or other organizational elements and fed into process changes	Results stay inside the scanning team and do not reach development, configuration management or incident response
Scanning team roles and knowledge	Interview	Interviews with the people who configure, run and review scans, confirming they know the process, escalation path and tool settings	Staff cannot explain scope exclusions, or responsibility shifts between the operations team and a managed service provider without written agreement
Risk assessment and assessment report as inputs	Examine	The current risk assessment and prior assessment report, checked for how identified vulnerabilities and scan outcomes are reflected in risk decisions	Risk assessment lists generic threats but does not reference current scan findings or the scanned environment

Implementing RA-5 scanning in six steps

This sequence turns RA-5 from a policy statement into a repeatable cycle: defined scope, configured scanners, triaged findings and tracked remediation, with each step leaving a record an assessor can examine.

Define parameters and scan frequency in the plan
The organization sets the RA-5 organization-defined parameters in the system security and privacy plan, including how often scans run, what triggers an additional scan when a new vulnerability is reported, and the remediation response times it will hold itself to. The control owner approves these values and the authorizing official sees them through the plan. The step is complete when the plan entry names a frequency, a trigger and a response time for each severity or category, and every value traces to a documented decision rather than a tool default.
Inventory assets in scope for scanning
The team builds a list of every component that the scans must cover, including operating systems, installed applications, network devices and hosted applications and their APIs. Each entry records the owner, environment, network location and whether the asset is in the authorization boundary. Gaps here become invisible blind spots, so the inventory is reconciled against the configuration management records and cloud account listings. The output is an asset list that an assessor can compare against the scanner's target list.
Configure scanners with authenticated credentials
The team selects scanning tools suited to each asset type, deploys them in the environment, and sets up credentialed scans for hosts and applications so the scanner can inspect installed software and configuration rather than only open ports. Credentials are issued to a dedicated scanning account with least privilege, stored in an approved secrets store and rotated under the organization's identity policy. Scan policies, target groups and schedules are exported as a scanner configuration record. Confirm with each tool's vendor or documentation which checks require credentials and which modes it supports.
Set signature update and feed routines
Scanners are only as current as their vulnerability data, so the team schedules automatic or documented manual updates of plugins, signatures, advisory feeds and offline copies for air-gapped networks. Each update is logged with the date, source and version applied, and failed updates raise an alert. Where a scanner runs offline, the team defines how new content is imported and who verifies its integrity. The signature update log, reviewed against the plan's frequency, shows that scanning used current vulnerability knowledge during the period under review.
Run scans, triage and deduplicate results
Scans run on the planned schedule and on triggered events, and the results are imported into a central record where the team reviews each finding. Analysts confirm whether a finding is a legitimate vulnerability, a false positive or an accepted risk, and merge duplicates that several tools report for the same flaw. Findings are tagged with the asset, severity and owner. Analysts record the reasoning for every dismissal, because an assessor will sample those decisions. The output is a set of triaged findings with status, owner and rationale for each item.
Track remediation to closure through the POA&M
Each legitimate vulnerability is assigned to an owner and remediated within the response time set in step one, or it is recorded as a plan of action and milestones item with a documented risk decision. Owners attach evidence such as patch records, configuration changes or a re-scan showing the finding is gone. The control owner reviews overdue items and escalates them through the risk response process. The step closes when every finding has either a verified closure record or an approved POA&M entry, which together show the vulnerability cycle ran to completion.

Scan evidence that passes an RA-5 review

An assessor testing RA-5 looks for proof that scans ran on schedule, covered the right assets with the right access, and led to remediation. The cards below cover the artifacts that carry that proof and how to keep them current between assessments.

Scanner configuration and credential scope

Export the scanner's configuration, scan policies and the credentials it uses, and record which asset groups each scan covers. An assessor checks that scans run authenticated where RA-5(2) is selected, and that the credential scope reaches the operating systems and hosted applications in the boundary. Keep a dated copy of each change so you can show what the configuration was during any sampled period. Confirm that the credential vault is itself access-controlled and logged.

Scan schedules and job logs

Retain the scheduled task definitions and the job logs showing start time, end time, target count and completion status for every run. The defined frequency in your RA-5 parameter should match what the logs show, with no gaps the assessor can find. Missed or failed scans need a recorded cause and a rerun. Keep the logs in a location that the scanning platform cannot silently overwrite.

Raw and triaged results

Keep the raw scanner output alongside the triaged record that shows which findings were confirmed, marked as false positives, or accepted with a rationale. Assessors compare triage decisions against the raw data to judge whether analysts reviewed results rather than exporting them. Record the reviewer, date and reason for each disposition. Deduplicated results in a findings manager are useful, but keep the original reports so the deduplication itself can be checked.

Signature and feed update records

Document when vulnerability feeds and signatures were last updated before each scan, including the feed version and source. RA-5 expects tools that use current vulnerability information, so a scan run against stale data can undermine the entire evidence set. Automated feed syncs should write a log entry that an assessor can read. For offline or air-gapped deployments, record how the local copy was refreshed and who approved the transfer.

Remediation tickets and POA&M entries

Link each confirmed finding to a remediation ticket with an owner, a due date tied to your defined response time, and a closure record that includes a re-scan result. Findings that cannot be fixed within that time belong in the plan of action and milestones with a documented risk decision. Assessors sample from confirmed findings and trace them forward to closure, so gaps between the scanner and the ticketing system are a common failure point.

Event-driven scans after new vulnerability reports

RA-5 requires scanning when new vulnerabilities are reported, not only on the calendar. Keep records of the advisories or alerts your team received, the date each was assessed for relevance to your assets, and the targeted scan that followed. Where no scan was needed because no affected component existed, record that decision with its basis. This evidence shows the event-driven trigger operates in practice.

How FedRAMP ties RA-5 to vulnerability detection and response rules

For a cloud service seeking FedRAMP authorization, RA-5 is not optional at any impact class. FedRAMP's Rev5 baselines require RA-5 at Classes B, C and D, and they add enhancements on top of the base control: 2 enhancements at Class B, 4 at Class C and 6 at Class D. The enhancement count rises with class, so a provider moving from Class B to Class C should expect its scanning scope and reporting to grow, not just its paperwork. Confirm the exact enhancement list for your class in the FedRAMP Rev5 control reference and the Consolidated Rules for 2026 before you size the scanning program.

FedRAMP does not leave the operational detail to the control text alone. Its guidance directs providers to the Vulnerability Detection and Response rules and the Vulnerability Evaluation and Reporting rules, which govern how detection, triage and remediation are carried out and reported. Read these alongside RA-5, because the scan frequency, remediation timeframes and reporting artifacts a provider defines in its System Security Plan must match what those rules expect. Assign one owner for the scan cadence and one for the remediation tracker, and make sure the evidence you produce (scan results, triage decisions and closure records) can be shown against each rule.

FedRAMP also requires an annual independent assessment rule for Rev5 certifications, which obliges providers to include RA-5 at Classes B, C and D in each year's FedRAMP independent assessment. At Class B the assessor must cover RA-5(2), and at Classes C and D it must cover RA-5(2) and RA-5(3). Plan for these controls to be tested every year, not only at initial authorization, and keep scan records complete for the full assessment period. Because FedRAMP rules change, check the current rule text in the machine-readable rules repository before each assessment cycle rather than relying on an older summary, including this one.

What RA-5 scanning costs in money and effort

This table breaks down the cost components of meeting RA-5 by who gets paid, whether each cost is one-time or recurring, what drives it up, and how to reduce it. No price or duration is given here because costs follow from scope and asset count, so use the table to build the questions you put to a quote.

Cost component	One-time or recurring	What drives it	How to reduce it
Commercial scanner licenses	Recurring, usually per year or per asset	Number of assets and IP addresses in scope, authenticated scan coverage, and whether hosted applications need a separate tool	Confirm asset counts before buying, compare licensing models in writing, and ask whether open-source scanners cover the same targets
Open-source scanner effort	One-time setup, then recurring operation	Deployment of the scanner and its database, feed and signature updates, tuning of scan policies, and staff time to review results	Use a single consolidated scanner where possible, automate feed updates, and document the setup once for reuse across environments
Engineering time for credentials and coverage	One-time for initial setup, recurring when systems change	Number of operating systems, databases and applications needing authenticated scans, credential vault design, and network segmentation between scanners and targets	Standardize scan accounts per platform, centralize credential storage, and maintain an asset inventory that scans can read from
Triage and remediation labor	Recurring	Volume of findings, rate of false positives, deduplication across tools, and the defined response times for each severity	Deduplicate findings across tools, set clear ownership by system, and track remediation against the timeframes the organization defined
Evidence upkeep	Recurring	Frequency of scans, retention periods for scan results and configuration documentation, and the number of systems each assessor will sample	Automate report export and storage, keep scanner configuration under change control, and map each report to the assessment object it supports
External testing or independent assessment sampling	Recurring per assessment cycle	Assessor sampling approach, whether the assessment is FedRAMP or another program, and how many systems and scan cycles the assessor reviews	Ask the assessor for its sampling method in writing, prepare consistent evidence packages, and confirm which RA-5 enhancements the assessment will test

Open-source tools that produce RA-5 evidence

RA-5 evidence comes from three jobs: detecting vulnerabilities on hosts and applications, scanning networks and services, and tracking findings from intake to closure. The four tools below cover different parts of that chain, and none of them replaces the organization's own scan policy, risk decisions or independent assessment. Confirm coverage in your own environment before you rely on any of them as evidence.

Wazuh vulnerability detection

Wazuh correlates the software inventory that each agent collects with the Wazuh CTI vulnerability repository, or with a locally hosted offline copy, to flag vulnerabilities in the operating system and installed applications of monitored endpoints. For RA-5, the evidence is the agent inventory, the vulnerability records tied to each host and the timestamps showing when detection ran. Check whether your air-gapped or restricted hosts can use the offline copy, and confirm how often the content updates. The license is GPL-2.0-only, so review distribution terms if you modify the code.

Fleet software vulnerability detection

Fleet detects vulnerable software on enrolled hosts by matching installed software against sources including the NVD, OVAL definitions, Microsoft security bulletins, Amazon Linux advisories and OSV. This gives RA-5 a host-level record of which software versions were present and which advisories matched them. Confirm which operating systems and feeds your fleet covers, and whether your scan frequency meets the organization-defined interval. Fleet is MIT licensed, so the main license obligations fall on the rest of your stack.

DefectDojo finding management

DefectDojo imports and reimports findings from more than 500 security tool report formats through its UI or API, including the open source edition, plus a generic findings import. It deduplicates findings using per-tool hashcode fields, so repeated scans do not create duplicate records. For RA-5, this is the layer that shows analysis, remediation status and response timeframes across tools. Confirm that each scanner you use has a supported parser, and document how deduplication decisions are reviewed. The license is BSD-3-Clause.

Greenbone Community Edition scanning

Greenbone Community Edition, built on OpenVAS, runs network and service vulnerability scans. The gvmd service stores results in PostgreSQL, manages users and permissions, and schedules scan tasks, while analysts run scans and review results in the Greenbone Security Assistant web interface. This provides scan reports that can be produced for assessors, including scan configuration and results. Confirm whether authenticated scanning works for each target type in your environment, because credentialed scans usually produce more complete RA-5 evidence. The license is AGPL-3.0-or-later, which carries network-use obligations if you modify and host the software for others.

Who owns RA-5 scanning and what a partner can take on

Your organization owns RA-5. That means deciding how often scans run and what they cover, setting the response times for vulnerabilities you have confirmed, accepting or rejecting risk for findings you cannot fix, and answering for the results when an assessor asks. SP 800-53 expects the organization to define the parameters of the control, so those choices cannot be delegated to a vendor or consultant.

Scan policy: Define the scan frequency, the scope of hosts and hosted applications, and the triggers for an off-cycle scan when a new vulnerability is reported.
Remediation timeframes: Set the response times by severity and document who approves exceptions.
Risk acceptance: Record each accepted or deferred finding with an owner, a rationale and a review date, usually in the plan of action and milestones.
Scanner credentials: Own the accounts used for authenticated scanning and the process that rotates them.
Assessment readiness: Keep the scanner configuration, scan results and remediation tickets in a form an assessor can sample.

Before engaging anyone, confirm internally who signs the risk acceptance decisions and where scan evidence will be kept for the assessment period.

Where RA-5 programs usually fall short

Most RA-5 findings trace back to coverage and proof rather than tooling. The gaps below are the ones assessors most often find when they test scan results against the control, and each one has a concrete fix an implementation team can put in place before the assessment starts.

Unscanned asset classes

Scans often cover servers and workstations but skip container images, network devices, hypervisors, cloud control planes and hosted applications. RA-5 asks for the system and hosted applications to be scanned, so any class left out is a gap an assessor will ask about. Build an asset inventory first, then map each asset class to a scanner or feed and record the exclusions with a reason and an owner.

Unauthenticated-only scans

A scan that runs without credentials sees only what the network exposes, so it misses missing patches and installed software on hosts. The enhancement for authenticated scanning expects credentialed scans that can read the software inventory. Check that scan credentials exist for each asset class, that logins succeed in the scan report, and that the report flags hosts where authentication failed.

Undocumented scan frequency

Teams often run scans on a schedule that exists only in the scanner's configuration. RA-5 requires a defined frequency, so the organization must state it in its policy and system security plan and show that scan tasks match it. Confirm the frequency with your authorizing official or assessor, export the scheduled task configuration as evidence, and retain run history that shows each scheduled scan completed.

Stale vulnerability signatures

A scanner with an old feed will not detect vulnerabilities published after its last update, and the scan report will look clean. RA-5 expects tools that use current enumeration and scoring data, so feed age is a control matter. Monitor the date of the last feed or database update for each scanner, alert when it falls outside your defined window, and keep an offline copy where the network restricts updates.

No proof of event-driven scans

RA-5 also requires scans when new vulnerabilities are reported, not only on the calendar. Many programs cannot show that a new advisory triggered a scan, so the event-driven part of the control looks absent. Record the advisory source, the time it was received, and the scan it started. Platforms that match installed software against vulnerability feeds can produce this trail when the matching runs on each new advisory.

Remediation with no closure record

Findings are often fixed in a ticket queue, but no one links the ticket to the rescanned host, so the report still shows the vulnerability open or the fix is unverified. RA-5 expects legitimate vulnerabilities to be remediated within defined response times and the results shared. Require each finding to carry a due date, a fix reference and a verification scan, and keep the deduplicated finding history in one place so assessors can trace open to closed.

RA-5 vulnerability scanning questions buyers ask

How much does it cost to meet RA-5 vulnerability scanning?

No public figure is available for meeting RA-5, and the cost depends on the scope you agree in writing. The main drivers are the number of hosts, containers and hosted applications in scope, how many scanning and tracking tools you run, how much authenticated scanning access you can provision, and how many assessment cycles you need to evidence. Costs fall into one-time work (tool deployment, integration, scan policy design and evidence templates) and recurring work (scan operations, triage, remediation tracking and assessor support). Ask any provider for a quote that separates these components, names which tools are self-hosted and which are licensed, and states what your own team must supply. DeployOpen does not publish a price list; a quote follows from the written scope.

How long does it take to put RA-5 scanning in place?

The timeline depends on how much of the environment is already instrumented, how quickly scanning credentials and network paths can be approved, and how many systems fall in scope. Teams with inventory data and an existing scanner usually need less time than teams building coverage from scratch. Work that tends to set the pace includes agreeing scan frequency and remediation timeframes with the authorizing official or risk owner, getting change approvals for authenticated scans, and running a first full cycle to confirm coverage. Ask for a milestone plan in the written scope with dependencies on your teams stated explicitly.

What does RA-5 require from our own team?

Your team keeps ownership of the control. Someone must decide the scan frequency, the scan targets and the response times for each severity, and must accept risk where a vulnerability cannot be fixed in time. Engineers must provide asset inventory data, service accounts for authenticated scans and access to patch pipelines. Security staff must triage results, confirm false positives and track remediation to closure. An implementation partner can configure tools, write procedures and produce evidence, but it cannot decide what your acceptable risk is or issue an assessment report. Confirm these responsibilities in the scope before work starts.

Can we meet RA-5 ourselves using open-source scanners?

Yes, an organization can meet the intent of RA-5 with open-source tools, though the control is about process as much as software. Greenbone Community Edition (OpenVAS) can run network vulnerability scans and store results, Wazuh can detect vulnerabilities in the operating systems and applications of monitored endpoints, Fleet can match installed software on enrolled hosts against advisory sources, and DefectDojo can consolidate findings from many tools and remove duplicates. The gaps usually lie in authenticated scanning coverage, documented response timeframes, and evidence that results were analyzed and acted on. Verify each tool's coverage against your asset types before you rely on it for evidence.

What does an assessor ask first about RA-5?

An assessor typically starts by asking for the scanning policy and procedures, the list of assets in scope, and the scanning tool configuration. They then examine recent scan results, check that authenticated scans were run where required, and trace several findings through to remediation or documented risk acceptance. Under the SP 800-53A procedures for this control, the assessor examines the risk assessment, the assessment report, the scanning tools with their configuration documentation, and the scanning results. Prepare a clear inventory, a scan calendar, and a sample of closed tickets before the assessment begins. The independent assessor decides the outcome, not the implementation partner.

How does FedRAMP change the RA-5 requirement?

FedRAMP adds its own baseline rules on top of NIST SP 800-53. Its Rev5 baselines require RA-5 at Classes B, C and D, with additional enhancements at each class, and FedRAMP guidance directs providers to its Vulnerability Detection and Response and Vulnerability Evaluation and Reporting rules. Its annual independent assessment rule requires RA-5 and specified enhancements to be included in an independent assessment at least once a year. Read the current FedRAMP rules for your class before scoping, because remediation timeframes and reporting obligations are set there rather than in the NIST text. Confirm the current rule version with FedRAMP or your assessor.

Primary sources for RA-5

Start with the primary text before any scanner or assessor opinion. The NIST publication for SP 800-53 Rev. 5 defines RA-5 and its enhancements, and the Release 5.2.0 catalog in OSCAL JSON, published in the usnistgov/oscal-content repository, gives you the same text in machine-readable form. Pull the catalog for RA-5 and read its five organization-defined parameters closely, because the scan frequency and the response times you pick for them are the decisions an assessor will test. Confirm which release your assessor and any contract references, since the release number matters when you cite it in your system security plan.

Read the RA-5 baseline selections alongside the catalog, using the SP 800-53B profiles for the low, moderate and high baselines. Your system's impact level determines which enhancements you must implement, so a scanning program built for one baseline may fall short of another. If you operate in a FedRAMP context, the FedRAMP Risk Assessment control reference shows how the program adds requirements to RA-5 for each impact class. Compare that page with your own baseline before you write the scanning procedure, and confirm the current class requirements with FedRAMP directly.

The FedRAMP rules repository holds the machine-readable Consolidated Rules that govern vulnerability detection and response, including the rules your authorizing body applies to RA-5. Treat the rule text as the controlling reference for timeframes and reporting, and treat the NIST text as the underlying control. Ask your assessor which rule version they will test against, because the rules are versioned and changes can affect remediation deadlines you have already built into your procedures.

How DeployOpen scopes and prepares RA-5 scanning

DeployOpen plans and implements the self-hosted open-source scanning and tracking platforms that produce RA-5 evidence inside the client's own infrastructure. The organization keeps ownership of its vulnerability management control, and an independent assessor decides whether the control is met.

How we scope

Written scope names the systems, hosted applications and network segments that RA-5 scanning must cover.
Scope records the agreed scan frequency, authenticated scanning targets and the event triggers for ad hoc scans.
Scope states which remediation timeframes the organization has defined and who approves them.

How we build

We deploy scanning and findings tools, such as Greenbone Community Edition, Wazuh or Fleet, in the client's own environment.
We configure scan tasks, credentials and vulnerability feeds so results are stored, deduplicated and reviewed in one place.
We test the scanning pipeline against known targets to confirm coverage before the first production scan cycle.

How we hand over

Handover includes configuration documentation, scanner settings and the list of scanned assets for assessor examination.
Scan result records, triage decisions and remediation tickets are exported in a format the client can retain as evidence.
Runbooks explain how the team updates vulnerability feeds, reruns scans and reviews findings after an engagement ends.

How we support

Engagements are fixed-scope, with scope, deliverables and timelines agreed in writing before work starts.
Ongoing support, upgrades and continuous testing are available as a retainer after handover.
Ask any provider to confirm in writing which parts of RA-5 remain the organization's responsibility and which the assessor will test.