The correct answer is to prioritize the KEV/high-EPSS issue after confirming asset exposure. This is because CISA KEV and EPSS vulnerability prioritization over CVSS reflects real-world threat intelligence: a medium CVSS vulnerability listed in the KEV catalog with a high EPSS score indicates active exploitation in the wild, whereas high CVSS scores only measure theoretical severity without accounting for exploitability or environmental context. On the CompTIA CySA+ CS0-003 exam, this tests your ability to apply risk-based prioritization frameworks like NIST SP 800-40, which emphasize threat intelligence over static severity ratings—a common trap is fixating on CVSS numbers while ignoring the KEV and EPSS signals. For tool configuration, the change that most directly improves result quality is enabling EPSS enrichment and KEV integration in your vulnerability scanner or pipeline, so findings are automatically ranked by active threat data rather than base scores. Memory tip: “KEV + EPSS beats CVSS” — if it’s known exploited and predicted to be exploited, patch it first, regardless of its CVSS label.
CS0-003 Vulnerability Management Practice Question
This CS0-003 practice question tests your understanding of vulnerability management. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. A key principle to apply: cISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A vulnerability report has 900 findings. One medium CVSS vulnerability is listed in CISA KEV and has high EPSS; several high CVSS issues are not exploitable in the environment. What should the analyst recommend? For tool configuration, Which scanner or pipeline change most directly improves result quality?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Prioritize the KEV/high-EPSS issue after confirming asset exposure
Option D is correct because the CISA Known Exploited Vulnerabilities (KEV) catalog combined with a high Exploit Prediction Scoring System (EPSS) score indicates active exploitation in the wild, which is a higher priority than static CVSS base scores. The analyst must first confirm that the asset is exposed in the environment before recommending remediation, as a vulnerability that is not exploitable due to compensating controls or network segmentation should not be prioritized. This approach aligns with the NIST SP 800-40 risk-based prioritization framework, which emphasizes threat intelligence over severity alone.
Key principle: CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Remediate only vulnerabilities with vendor logos in the report
Why it's wrong here
Vendor branding is irrelevant to risk.
✗
Always sort only by CVSS base score
Why it's wrong here
CVSS is useful but incomplete without exploitability and exposure.
✗
Remediate alphabetically by CVE ID
Why it's wrong here
CVE order has no risk meaning.
✓
Prioritize the KEV/high-EPSS issue after confirming asset exposure
Why this is correct
Known exploitation and likelihood can outweigh base CVSS in risk-based prioritization.
Related concept
CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that CVSS base score alone determines priority, when in reality threat intelligence (KEV, EPSS) and environmental context (asset exposure, compensating controls) are more critical for effective vulnerability management.
Detailed technical explanation
How to think about this question
The EPSS model uses machine learning on over 1,000 features (e.g., exploit code maturity, chatter on dark web forums) to predict the probability of exploitation within 30 days, outputting a score from 0 to 1. CISA KEV is a curated list of vulnerabilities that have been confirmed as exploited in the wild, often with a specific CISA Binding Operational Directive (BOD 22-01) requiring remediation by a deadline. In practice, a medium CVSS vulnerability with high EPSS and KEV listing may be actively weaponized in ransomware campaigns, while a high CVSS vulnerability that is not exploitable (e.g., requires local access on a system with no local users) should be deprioritized or marked as a false positive.
KKey Concepts to Remember
CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.
EPSS predicts the likelihood of a vulnerability being exploited in the next 30 days.
Risk-based prioritization considers exploitability, impact, and asset exposure.
A lower CVSS score with active exploitation (KEV) can be more critical than a higher CVSS score without.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this CS0-003 question in full detail.
Review cISA KEV lists vulnerabilities with confirmed in-the-wild exploitation., then practise related CS0-003 questions on the same topic to reinforce the concept.
Vulnerability Management — This question tests Vulnerability Management — CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation..
What is the correct answer to this question?
The correct answer is: Prioritize the KEV/high-EPSS issue after confirming asset exposure — Option D is correct because the CISA Known Exploited Vulnerabilities (KEV) catalog combined with a high Exploit Prediction Scoring System (EPSS) score indicates active exploitation in the wild, which is a higher priority than static CVSS base scores. The analyst must first confirm that the asset is exposed in the environment before recommending remediation, as a vulnerability that is not exploitable due to compensating controls or network segmentation should not be prioritized. This approach aligns with the NIST SP 800-40 risk-based prioritization framework, which emphasizes threat intelligence over severity alone.
What should I do if I get this CS0-003 question wrong?
Review cISA KEV lists vulnerabilities with confirmed in-the-wild exploitation., then practise related CS0-003 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
CISA KEV lists vulnerabilities with confirmed in-the-wild exploitation.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A vulnerability report has 900 findings. One medium CVSS vulnerability is listed in CISA KEV and has high EPSS; several high CVSS issues are not exploitable in the environment. What should the analyst recommend? For stakeholder management, Which documentation or approval is required to keep the programme defensible?
hard
A.Remediate alphabetically by CVE ID
B.Remediate only vulnerabilities with vendor logos in the report
✓ C.Prioritize the KEV/high-EPSS issue after confirming asset exposure
D.Always sort only by CVSS base score
Why C: Option C is correct because CISA KEV and high EPSS indicate active exploitation in the wild, making the medium CVSS vulnerability a higher operational priority than non-exploitable high CVSS issues. The analyst must first confirm asset exposure to ensure the vulnerability actually affects the environment before recommending remediation. This aligns with risk-based vulnerability management (RBVM) principles, which prioritize exploitability and threat intelligence over CVSS base score alone.
Variation 2. A vulnerability report has 900 findings. One medium CVSS vulnerability is listed in CISA KEV and has high EPSS; several high CVSS issues are not exploitable in the environment. What should the analyst recommend? For control selection, Which control best addresses the stated weakness without hiding risk?
hard
A.Always sort only by CVSS base score
B.Remediate alphabetically by CVE ID
✓ C.Prioritize the KEV/high-EPSS issue after confirming asset exposure
D.Remediate only vulnerabilities with vendor logos in the report
Why C: Option C is correct because it combines external threat intelligence (CISA KEV and EPSS) with internal context (asset exposure) to prioritize a medium-severity vulnerability that is actively exploited and has a high probability of exploitation. This approach aligns with the NIST framework for risk-based vulnerability management, which emphasizes that not all high-CVSS vulnerabilities are exploitable in a given environment, while lower-scored vulnerabilities in KEV pose immediate risk.
Variation 3. A vulnerability report has 900 findings. One medium CVSS vulnerability is listed in CISA KEV and has high EPSS; several high CVSS issues are not exploitable in the environment. What should the analyst recommend? For validation, Which action should be taken before closing or downgrading the finding?
hard
A.Remediate alphabetically by CVE ID
✓ B.Prioritize the KEV/high-EPSS issue after confirming asset exposure
C.Always sort only by CVSS base score
D.Remediate only vulnerabilities with vendor logos in the report
Why B: Option B is correct because the CISA KEV vulnerability with high EPSS indicates active exploitation in the wild, making it a critical threat regardless of its medium CVSS base score. Prioritizing it after confirming asset exposure ensures the organization addresses the most imminent risk first, as high CVSS issues that are not exploitable in the environment pose no actual danger. This aligns with risk-based vulnerability management, where exploitability and threat intelligence (KEV, EPSS) override raw severity scores.
Variation 4. A vulnerability report has 900 findings. One medium CVSS vulnerability is listed in CISA KEV and has high EPSS; several high CVSS issues are not exploitable in the environment. What should the analyst recommend? For business prioritization, Which recommendation gives the best risk-based order of work?
hard
A.Always sort only by CVSS base score
B.Remediate alphabetically by CVE ID
✓ C.Prioritize the KEV/high-EPSS issue after confirming asset exposure
D.Remediate only vulnerabilities with vendor logos in the report
Why C: Option C is correct because it combines threat intelligence (CISA KEV and high EPSS) with environmental context (asset exposure) to prioritize the vulnerability that is actively exploited and likely to be used in attacks, even though its CVSS base score is medium. This aligns with risk-based vulnerability management, which weights exploitability and business impact over raw severity scores.
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Question Discussion
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