##  [Use-After-Free](/use-after-free) 

  ##  [Use-After-Free](https://natural.quantumdictionary.io/use-after-free-0) 

  

 [![Natural & Formal Sciences Dictionary](/sites/default/files/styles/large/public/2026-01/Natural%20%26%20Formal%20Sciences.png.webp?itok=2kCDRVQv)](/topic-specific-dictionaries/natural-formal-sciences)



**Natural & Formal Sciences Dictionary**

 







 

 

 

 



 

 

 

 

Definition

An error that occurs when code accesses memory (or another resource) after it has been deallocated or freed, resulting in undefined behavior, data corruption, crashes, or security vulnerabilities.