CVE-2020-12518: Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: An attacker can use the knowledge gained by reading the insufficiently protected sensitive information to plan further attacks.

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-17 · updated 2026-06-17
Weakness: CWE-200

Description

On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an attacker can use the knowledge gained by reading the insufficiently protected sensitive information to plan further attacks.

Affected products

Phoenixcontact Plcnext Firmware: before 2021.0 — fixed in 2021.0

How to fix

Upgrade to a fixed version: Phoenixcontact Plcnext Firmware 2021.0. Check the vendor advisory for mitigations.

References

https://cert.vde.com/en-us/advisories/vde-2020-049
https://cert.vde.com/en-us/advisories/vde-2020-049

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