CFG or Control Flow Guard it's a Windows security feature designed to prevent memory corruption vulnerabilities and reduce the execution of exploits, such as buffer overflows. CFG is an enhancement over previous exploit mitigation technologies, such as /GS (Buffer Security Check), Data Execution Prevention (DEP), and Address Space Layout Randomization (ASLR).

References:

• https://learn.microsoft.com/en-us/windows/win32/secbp/control-flow-guard

• https://cyberpedia.reasonlabs.com/EN/control%20flow%20guard%20(cfg).html

• https://dl.acm.org/doi/fullHtml/10.1145/3664476.3670432#:~:text=Microsoft%20introduced%20Control%20Flow%20Guard,that%20could%20jeopardize%20its%20security.

• https://learn.microsoft.com/en-us/sysinternals/resources/windows-internals

CFG