A zero-day vulnerability is a type of vulnerability unknown to the creator or vendor of the system or software.

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A security bug is a software bug that can be exploited to gain unauthorized access or privileges on a computer system. A vulnerability is a weakness that can be exploited by a threat actor to perform unauthorized actions within a computer system.

Some differences between bugs and vulnerabilities:
Bug:
A flaw or vulnerability in the software or hardware design that can be potentially exploited by attackers.
Vulnerability: A bug that manifests itself as an opportunity for exploitation.


A zero-day vulnerability is a type of vulnerability unknown to the creator or vendor of the system or software.