CVE-2020-12499

Pilz CODESYS DevSys — vulnerability CVE-2020-12499

In PHOENIX CONTACT PLCnext Engineer version 2020.3.1 and earlier an improper path sanitation vulnerability exists on import of project files.

CVSS 8.2No patch available

This record: live connection— last retrieved: 7 November 2026 at 02:35.

Vendor

Pilz

Products

CODESYS DevSys, Live Video Server, PAS4000, CodeMeter Runtime, PASvisu, PNOZsigma and 2 more

up to version <6.90

Published

21 July 2020

Last modified

17 June 2026

Original source information

Taken directly from NVD, CISA or the vendor — sometimes in English, unchanged from the source.

Technical description

In PHOENIX CONTACT PLCnext Engineer version 2020.3.1 and earlier an improper path sanitation vulnerability exists on import of project files.

CVSS 3.1 — vector details

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Attack vector

LOCAL

Privileges required

LOW

User interaction

REQUIRED

Confidentiality

High

Integrity

High

Availability

High

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

0.4%

Percentile

34e

Source: FIRST.org, updated on 6 November 2026.

Patch information

Use the current Version 7.10 of the Software CodeMeter Runtime, available via the manufacturer's website. https://www.wibu.com/de/support/anwendersoftware/anwendersoftware.html Only use the Software CodeMeter Runtime as Client. The software tools named under affected products use the Software CodeMeter Runtime as Client in their default setting. Pilz also recommends using a local firewall to limit unwanted access to the network ser- vices of the device with Software CodeMeter Runtime installed.

IACS Radar assessment

Our own interpretation and context for the source data above.

IACS Radar assessment

Our own interpretation and context for this vulnerability — not an official source.

IACS Radar priority score

43/ 100

Based on CVSS 8.2, EPSS 0.4%, industrial relevance 40/100.

Combines CVSS, EPSS, KEV status, industrial relevance and exposure relevance — a complement to, not a replacement for, the individual scores below and above.

Conditions for exploitation

•Local or adjacent access to the device is required.
•Limited user privileges are required.
•User interaction (for example opening a file) is required.

Operational impact & energy relevance

Possible loss of visibility of or control over the process upon successful exploitation.

No strong energy-sector-specific signals recognised; general OT/ICS relevance.

Recommended defensive measures

•Apply the latest firmware or software update and validate its integrity.
•Encrypt sensitive configuration and management communication.
•Restrict network access to the affected device to a dedicated OT management segment.
•Implement network segmentation in line with zones and conduits (IEC 62443-3-2).

Industrial relevance score

40/ 100

• Mentioned in an official CISA ICS advisory, which confirms direct relevance to industrial control systems.

Classification is provisional; manual verification by an OT security analyst is recommended.

Classified by IACS Radar-analysepijplijn (geautomatiseerd) on 7 November 2026.

IEC 62443 mapping

IEC 62443-4-1IEC 62443-4-2FR3 · SysteemintegriteitFR4 · Vertrouwelijkheid van gegevens

Automatic IACS Radar assessment based on the reported CWE weakness classification; not an official certification statement.

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