F5 Products Hacked: Nation-State Actor Breached Systems, Source Code Exposed

On October 15, 2025, F5 disclosed a breach by a sophisticated nation-state actor. This actor maintained long-term persistent access to F5's infrastructure. Access included BIG-IP product development source code and undisclosed security vulnerability information. F5 released patches on the same day to address these vulnerabilities. Currently, there is no known exploitation of these issues. CERT-EU strongly recommends patching affected F5 products as soon as possible.