CVE-2020-12519: Phoenixcontact Plcnext Firmware

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use this vulnerability i.e. to open a reverse shell with root privileges.

Affected products

• Phoenixcontact Plcnext Firmware: before 2021.0 (fixed in 2021.0)

Published 2020-12-17. Last modified 2026-06-17.