CS0-003 Vulnerability Management Practice Question
This CS0-003 practice question tests your understanding of vulnerability management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: internet-facing systems carry higher inherent risk.. 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 scan identifies a critical unauthenticated remote-code-execution flaw on an internet-facing VPN appliance that is actively exploited in the wild. Several internal-only medium vulnerabilities are also present. What should be remediated first? For stakeholder management, Which documentation or approval is required to keep the programme defensible?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Patch or mitigate the VPN appliance immediately and verify exposure is removed
The critical unauthenticated remote-code-execution vulnerability on an internet-facing VPN appliance is actively exploited in the wild, posing an immediate risk of complete compromise. Remediation must be prioritized based on severity, exploitability, and exposure, making immediate patching or mitigation the only defensible first step.
Key principle: Internet-facing systems carry higher inherent risk.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Patch or mitigate the VPN appliance immediately and verify exposure is removed
Why this is correct
Internet exposure plus active exploitation makes this the highest-risk item despite other findings.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Internet-facing systems carry higher inherent risk.
✗
Start with the oldest medium vulnerability
Why it's wrong here
Age matters, but exploitability and exposure drive priority.
✗
Remediate only low-risk internal findings to improve closure rate
Why it's wrong here
Closure rate alone can create misleading risk reduction.
✗
Defer all remediation until the monthly patch window
Why it's wrong here
Known exploited internet-facing RCE requires emergency handling.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may choose to defer remediation to a scheduled patch window (Option D) due to change management policies, but the question explicitly requires prioritizing based on active exploitation and critical severity, overriding standard scheduling.
Detailed technical explanation
How to think about this question
In vulnerability management, the Common Vulnerability Scoring System (CVSS) base score is a key factor, but active exploitation (e.g., CISA KEV catalog) elevates priority regardless of score. For VPN appliances, unauthenticated RCE often targets SSL/TLS or management interfaces (e.g., CVE-2023-46805 on Ivanti Connect Secure), where immediate isolation or hotfix application is required before the next patch cycle. Stakeholder management for such emergency changes typically requires a documented risk acceptance or emergency change request (ECR) to maintain audit defensibility.
KKey Concepts to Remember
Internet-facing systems carry higher inherent risk.
Remote Code Execution (RCE) is a critical vulnerability type.
Active exploitation in the wild demands immediate remediation.
Risk prioritization considers impact, likelihood, and exposure.
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
Internet-facing systems carry higher inherent risk.
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.
Vulnerability Management — This question tests Vulnerability Management — Internet-facing systems carry higher inherent risk..
What is the correct answer to this question?
The correct answer is: Patch or mitigate the VPN appliance immediately and verify exposure is removed — The critical unauthenticated remote-code-execution vulnerability on an internet-facing VPN appliance is actively exploited in the wild, posing an immediate risk of complete compromise. Remediation must be prioritized based on severity, exploitability, and exposure, making immediate patching or mitigation the only defensible first step.
What should I do if I get this CS0-003 question wrong?
Review internet-facing systems carry higher inherent risk., then practise related CS0-003 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Internet-facing systems carry higher inherent risk.
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Question Discussion
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