Variant weakness
Stable
CWE-416: Use After Free
Also known as: Dangling pointer, UAF, Use-After-Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
3,417
Recorded CVEs
With this primary weakness
101
KEVs
In the CISA KEV catalog
High
Likelihood of exploit
Per MITRE
Variant
Abstraction
MITRE classification
Overview
CWE-416 (Use After Free) is a variant-level software weakness catalogued by MITRE in the Common Weakness Enumeration (CWE). It describes a recurring type of mistake that can lead to exploitable security vulnerabilities.