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CompTIA CySA+ CS0-003 Practice Question

What term is used to describe a vulnerability that is known to the vendor but for which no patch has yet been released?

Vulnerability under review
Known issue
Zero-day vulnerability
Unidentified vulnerability

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Answer Description

A zero-day vulnerability is one that is known to the software vendor but has not yet been patched or for which a patch is not yet widely available. These vulnerabilities are highly critical because they can be exploited by attackers while there is still no widely available or implemented solution to mitigate them. Understanding the correct term is essential for clear communication in reporting vulnerabilities. 'Unidentified' implies that the vulnerability is not known, which is incorrect for a zero-day. 'Known issue' does not necessarily indicate that there is no patch available, and 'under review' suggests that the vulnerability is being evaluated but does not convey the urgency or lack of available patch.

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