# VDR-TFR-MVF — Persistent Machine Verification and Validation for Rev5

> FedRAMP Consolidated Rules for 2026 v2026.07.14.01 · updated 2026-07-14
> Canonical page: /requirement/vdr-tfr-mvf

Vulnerability Detection and Response (`VDR`) · group rev5 · subset TFR
Force: none stated

## Statement

_No statement text is recorded for this requirement._

## Who it binds

- Providers

## Certification classes

- class B
- class C
- class D

## Which certifications it binds

Certification type: 20x, Rev5
Path: Program, Agency

## Machine-readable form

_This requirement names no JSON schema. FRC-CSO-JSN binds a provider to a schema only where a rule contains one._

## Artifacts

_No requirement-specific artifact is named._

## Timeframes

- {"requirementId":"VDR-TFR-MVF","documentKey":"VDR","documentName":"Vulnerability Detection and Response","group":"rev5","subset":"TFR","name":"Persistent Machine Verification and Validation for Rev5","statement":"Providers of FedRAMP Rev5 Class B offerings SHOULD verify and validate the status of machine-based information resources at least once every month.","force":"SHOULD","affects":["Providers"],"class":"b","num":1,"type":"months","sortKey":730.5}
- {"requirementId":"VDR-TFR-MVF","documentKey":"VDR","documentName":"Vulnerability Detection and Response","group":"rev5","subset":"TFR","name":"Persistent Machine Verification and Validation for Rev5","statement":"Providers of FedRAMP Rev5 Class C offerings MUST verify and validate the status of machine-based information resources at least once every month.","force":"MUST","affects":["Providers"],"class":"c","num":1,"type":"months","sortKey":730.5}
- {"requirementId":"VDR-TFR-MVF","documentKey":"VDR","documentName":"Vulnerability Detection and Response","group":"rev5","subset":"TFR","name":"Persistent Machine Verification and Validation for Rev5","statement":"Providers of FedRAMP Rev5 Class D offerings MUST verify and validate the status of machine-based information resources at least once every month.","force":"MUST","affects":["Providers"],"class":"d","num":1,"type":"months","sortKey":730.5}

## Notifications

_This requirement demands no notification._