Final answer:
The term for a weakness in system security due to outdated software like Adobe Flash Player is known as a vulnerability.
Step-by-step explanation:
Running an outdated version of Adobe Flash Player, or any software, can introduce weaknesses in system security. These weaknesses are more formally known as a vulnerability. The term for a weakness in system security due to outdated software like Adobe Flash Player is known as a vulnerability.
A vulnerability is a flaw or weakness in the design, implementation, operation, or management of a system that could be exploited to violate the system's security policy. In contrast, a bug is a general term for any error or defect in software or hardware.
A feature is an intended function or capability of a product. An update refers to a newer version of software released to improve functionality or address known bugs and vulnerabilities.