Tellabs Optical Line Terminal (OLT) 1150 devices allow Remote Command Execution via the -l option to TELNET or SSH. Tellabs has addressed this issue in the SR30.1 and SR31.1 release on February 18, 2020.Referenceshttps://github.com/ellwoodthewood/tellabs_rcehttps://docs.tellabs.com/articles/#%21vulnerability-response/cve-2019-19148