Chapter 5 – Test Management
Escaped Defect – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
A defect that is not detected by a given test activity but is found later.
In simple words
A bug that slipped past your tests and reached the next stage or production.
Exam tip
Track escaped defects by root cause to fix your test process, not just the bug.
Related terms
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