CompTIA Security+ (SY0-701) — Question 491

A company relies on open-source software libraries to build the software used by its customers. Which of the following vulnerability types would be the most difficult to remediate due to the company’s reliance on open-source libraries?

Answer options

• A. Buffer overflow
• B. SQL injection
• C. Cross-site scripting
• D. Zero-day

Correct answer: D

Explanation

A zero-day vulnerability is particularly challenging to remediate because it is an undisclosed flaw that developers may not be aware of until it is exploited. In contrast, buffer overflows, SQL injections, and cross-site scripting are more commonly known vulnerabilities with established mitigation techniques and can often be patched more readily.