On 16.1.x versions prior to 16.1.2.2 15.1.x versions prior to 15.1.5.1 14.1.x versions prior to 14.1.4.6 13.1.x versions prior to 13.1.5 and all versions of 12.1.x 11.6.x a DOM-based cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP AFM CGNAT and PEM Configuration utility that allows an attacker to execute JavaScript in the context of the currently logged-in user. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated