Use After Free
Flash Player versions 220.127.116.11 and earlier, and 18.104.22.168 and earlier have a use after free vulnerability. Successful exploitation could lead to arbitrary code execution.
CWE-416 - Use After Free
Use-after-free (UaF) vulnerability occurs when the application is using a pointer to memory that has been freed. Any attempt to read/write to a buffer after it is de-allocated allows memory corruption, sensitive information exposure, and can potentially lead to arbitrary code execution.