CVE-2019-19148: Tellabs Optical Line Terminal 1150 Firmware

Critical severity, CVSS 9.8. EPSS: 7.9% chance of exploitation in the next 30 days.

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.

Affected products

• Tellabs Optical Line Terminal 1150 Firmware: version ont709.2.50.12 only

Published 2020-03-20. Last modified 2026-06-17.