CompTIA Security+ (SY0-501) — Question 726

Which of the following terms BEST describes an exploitable vulnerability that exists but has not been publicly disclosed yet?

Answer options

• A. Design weakness
• B. Zero-day
• C. Logic bomb
• D. Trojan

Correct answer: B

Explanation

The correct answer is B, as a zero-day vulnerability refers to a security flaw that is unknown to those who should be interested in mitigating it. Options A, C, and D describe different types of security issues or malware but do not specifically relate to undisclosed vulnerabilities.