Final answer:
The term used to describe a quality problem found only after the software has been released to end-users is a bug.
Step-by-step explanation:
The term used to describe a quality problem found only after the software has been released to end-users is bug. A bug is an error or defect in the software that causes it to behave unexpectedly or incorrectly. Unlike an error, which is a mistake made during the development process, a bug is discovered after the software has been released to users.