On versions 15.1.0-15.1.0.1, 15.0.0-15.0.1.2, and 14.1.0-14.1.2.3, in BIG-IP APM portal access, a specially crafted HTTP request can lead to reflected XSS after the BIG-IP APM system rewrites the HTTP response from the untrusted backend server and sends it to the client.