F5 BIG-IP is an application delivery platform from F5 that integrates network traffic orchestration, load balancing, intelligent DNS, remote access policy management, etc. A denial of service vulnerability exists in the F5 BIG-IP DNS profile, where the Rapid Response Mode ( RRM ) setting is turned on in the DNS profile and the profile is configured to On a hardware syncookie enabled virtual server, an undisclosed request could cause TMM to terminate and an attacker could exploit the vulnerability to cause a denial of service.