Ecosystem Agent version 4 < 4.1.5.2597 and Ecosystem Agent version 5 < 5.1.4.2473 did not properly validate SSL/TLS certificates, which could allow a malicious actor to perform a Man-in-the-Middle and intercept traffic between the agent and N-able servers from a privileged network position.
https://me.n-able.com/s/article/How-to-check-Ecosystem-Agent-version-in-N-central
https://me.n-able.com/s/article/How-to-check-Ecosystem-Agent-Version-in-N-sight