In Foxit Reader SDK (ActiveX) Professional 18.104.22.1681, an uninitialized object in IReader_ContentProvider::GetDocEventHandler occurs when embedding the control into Office documents. By opening a specially crafted document, an attacker can trigger an out of bounds write condition, possibly leveraging this to gain remote code execution.
CWE-787 - Out-of-Bounds Write
Out-of-bounds write vulnerability is a memory access bug that allows software to write data past the end or before the beginning of the intended buffer. This may result in the corruption of data, a crash, or arbitrary code execution.