CVE-2020-12517

Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS: An authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the vulnerable website (local privilege escalation).

Published Dec 17, 2020 CVSS 3.1 · 8.8 High EPSS 1.1% KEV · Not listed
Description
On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the vulnerable website (local privilege escalation).

Remediation

Vendor Solution

Phoenix Contact recommends affected users to upgrade to the current Firmware 2021.0 LTS or higher which fixes these vulnerabilities.


Vendor Workaround

Phoenix Contact recommends operating network-capable devices in closed networks or protected with a suitable firewall. For detailed information on our recommendations for measures to protect network-capable devices, please refer to the Phoenix Contact application note.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2020-4819 On Phoenix Contact PLCnext Control Devices versions before 2021.0 LTS an authenticated low privileged user could embed malicious Javascript code to gain admin rights when the admin user visits the vulnerable website (local privilege escalation).
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Sep 16, 2024, 10:10 PM
Reserved
Apr 30, 2020, 12:00 AM
Status
Modified
Published
Dec 17, 2020, 11:15 PM
Modified
Jun 17, 2026, 2:51 AM