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CISSP · Question #459

CISSP Question #459: Real Exam Question with Answer & Explanation

The correct answer is D: End of life system detected. In a vulnerability assessment, an end-of-life (EOL) system represents a high risk because it no longer receives security patches or vendor support, leaving known vulnerabilities permanently unmitigated.

Submitted by minji_kr· Mar 5, 2026Security Assessment and Testing

Question

Which of the following findings would MOST likely indicate a high risk in a vulnerability assessment report?

Options

  • ATransmission control protocol (TCP) port 443 open
  • BNon-standard system naming convention used
  • CUnlicensed software installed
  • DEnd of life system detected

Explanation

In a vulnerability assessment, an end-of-life (EOL) system represents a high risk because it no longer receives security patches or vendor support, leaving known vulnerabilities permanently unmitigated.

Common mistakes.

  • A. TCP port 443 is the standard port for HTTPS traffic and its presence is expected and normal in most environments, representing legitimate encrypted web communication rather than a vulnerability.
  • B. A non-standard system naming convention is an administrative or compliance concern related to asset management hygiene, but it does not directly introduce a security vulnerability or exploitable attack surface.
  • C. Unlicensed software is primarily a legal and compliance risk (software licensing violation) rather than a direct security vulnerability, and would typically appear in a compliance audit rather than as a high-risk security finding.

Concept tested. Identifying high-risk findings in vulnerability assessments

Reference. https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Topics

#vulnerability assessment#risk assessment#end-of-life systems#patch management

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