The software writes data past the end, or before the beginning, of the intended buffer. This typically occurs when the pointer or its index is incremented or
decremented to a position beyond the bounds of the buffer or when
pointer arithmetic results in a position outside of the valid memory
location to name a few. This may result in corruption of sensitive
information, a crash, or code execution among other things.
Latest vulnerabilities for CWE-787
Description of CWE-787 on Mitre website