According to the CISSP CBK Official Study Guide, although code using a specific program language may not be susceptible to a buffer overflow attack, the supporting virtual machine could be susceptible. A buffer overflow attack is a type of attack that exploits a vulnerability in the memory allocation and management of a program, by sending more data than the buffer can hold, and overwriting the adjacent memory locations, such as the return address, the stack pointer, or the registers. A buffer overflow attack can result in various consequences, such as crashing the program, executing arbitrary code, or escalating privileges. A program language is a set of rules and syntax that defines how a program is written and executed, such as C, Java, Python, or Ruby. Some program languages, such as C, are more susceptible to buffer overflow attacks, as they allow direct manipulation of memory and pointers, and do not perform bounds checking on the buffers. Other program languages, such as Java, are less susceptible to buffer overflow attacks, as they use a virtual machine to execute the code, and perform automatic memory management and garbage collection. A virtual machine is a software application that emulates a physical machine, and provides an isolated and abstracted environment for running programs, such as the Java Virtual Machine (JVM) or the .NET Framework. However, the virtual machine itself could be susceptible to buffer overflow attacks, as it may be written in a program language that is vulnerable, or it may have flaws or bugs in its implementation or configuration. Therefore, the code using a specific program language may not be susceptible to a buffer overflow attack, but the supporting virtual machine could be susceptible. The calls to plug-in programs, the supporting application code, and the graphical images used by the application are not necessarily related to the susceptibility of the code using a specific program language to a buffer overflow attack, as they may depend on other factors, such as the type, source, and quality of the plug-in programs, the application code, and the graphical images, as well as the security controls and mechanisms that are applied to them.