CS0-004 - Vulnerability Management (26% of the exam) - 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
lock_openFree 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 positivescheck_circle 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.
Answers that look right on this material and are not. Each one is a distractor from a different question in the CS0-004 bank for this domain.
It fingerprints open ports and service banners across the subnet to infer which hosts are running web servers
errorWhy it is wrong: Port and banner discovery is the strength of a network scanner, so this describes the wrong tool for probing form logic.
The finding is a confirmed vulnerability and a patch ticket for Apache 2.4.53 should be raised immediately given the High severity.
errorWhy it is wrong: The High severity is tempting, but patching software the host does not run is impossible and ignores that the evidence conflicts with the confirmed build.
Because they can only run unauthenticated and therefore never see the true state of the application
errorWhy it is wrong: Tempting because credentials affect accuracy, but many web application scanners do authenticate; the validation burden comes from inference, not an inability to log in.