On BIG-IP version 16.0.x before 16.0.1 15.1.x before 15.1.1 14.1.x before 14.1.3.1 13.1.x before 13.1.3.5 and all 12.1.x and 11.6.x versions undisclosed endpoints in iControl REST allow for a reflected XSS attack which could lead to a complete compromise of BIG-IP if the victim user is granted the admin role. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.