Researchers from Nanyang Technological University disclosed 84 security vulnerabilities in 4G and 5G core networks, including flaws enabling denial-of-service attacks and session hijacking. These issues stem from implicit trust between core network components and affect widely used open-source LTE/5G implementations, exposing risks in cloud-native deployments where interfaces may be accessible to attackers. The study demonstrated how adversaries could exploit these flaws to hijack user sessions by injecting malicious protocol messages, leading to traffic interception, manipulation, or selective service disruption.
https://thehackernews.com/2026/07/researchers-report-84-flaws-in-4g-and.html