Red Hat announced the end of service for RHEL 5. They will offer another three and a half years of security patches and critical fixes if a customer has bought the Extended Lifecycle Support (ELS).
This enterprise distribution has been in the market now for more than ten years. Now it’s time to move on. Best of course would be the RHEL 7 stream, which right now is at RHEL 7.3. Every day you stay on the old release without security updates is increasing the risk of being hacked!