CS0-004 - Vulnerability Management - Section 2.2

Given a scenario, analyze output from vulnerability assessment tools.

Read and validate output from vulnerability scanners, web-application scanners, and related assessment tools, distinguishing a true finding from a false positive or false negative. Confirm findings against asset context and configuration, and recognise the limits of what a scanner result on its own can establish.

vulnerability scanner outputfalse positive vs false negativeweb application scannersfinding validationCVE and plugin evidence

Practice question for this objective

Free sampleVulnerability Managementhard

In vulnerability management, why is finding validation treated as a distinct step rather than something the scanner alone completes?

  • AValidation confirms whether a reported finding is real and exploitable in context, separating true positives from false positives Correct
  • BValidation raises the CVSS base score of confirmed findings so they automatically move to the top of the remediation queue
  • CValidation re-runs the same scan with credentials so the tool can overwrite its earlier unauthenticated results in the report
  • DValidation removes low-severity informational entries from the output so the analyst reviews a shorter and cleaner result set
Explain that finding validation confirms whether a scanner result is real and exploitable, distinguishing true positives from false positives. Scanners infer weaknesses from signatures and version data and cannot always confirm exploitability in a specific environment, so a separate validation step tests the claim and prevents effort being spent on false positives.

Why A is correct: Validation exists to test the scanner's claim against the actual environment, which is what distinguishes genuine findings from false positives.

Why B is wrong: CVSS base scores are intrinsic to the vulnerability and are not altered by validation, so this misdescribes what validation does.

Why C is wrong: A credentialed re-scan can help, but validation is about confirming reality, not merely rewriting a report entry, so this narrows the purpose too far.

Why D is wrong: Trimming informational noise is report hygiene, not the confirmation of whether a flagged weakness genuinely exists.

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