CVE-2020-29377: Vsolcn v1600d Firmware

Critical severity, CVSS 9.8. EPSS: 1.3% chance of exploitation in the next 30 days.

An issue was discovered on V-SOL V1600D V2.03.69 OLT devices. The string K0LTdi@gnos312$ is compared to the password provided by the the remote attacker. If it matches, access is provided.

Affected products

• Vsolcn v1600d Firmware: version 2.03.69 only

Published 2020-11-29. Last modified 2026-06-17.