The issue is caused by a buffer overflow in the Chakra JavaScript engine of Microsoft Edge, allowing a remote attacker to execute arbitrary code or cause a denial of service by accessing a specially crafted website. The vulnerability can also corrupt memory when handling objects, enabling an attacker to execute arbitrary code in the context of the current user. If the user has administrative rights, the attacker could gain control of the system, install programs, view or modify data, or create new accounts with full user rights.