CVE-2025-41656

Pilz IndustrialPI 4 — vulnerability CVE-2025-41656

An unauthenticated remote attacker can run arbitrary commands on the affected devices with high privileges because the authentication for the Node_RED server is not configured by default.

CVSS 10.0No patch available

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

Vendor

Pilz

Product

IndustrialPI 4

up to version <=2024-08

Published

1 July 2025

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

An unauthenticated remote attacker can run arbitrary commands on the affected devices with high privileges because the authentication for the Node_RED server is not configured by default.

CVSS 3.1 — vector details

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

Attack vector

NETWORK

Privileges required

NONE

User interaction

NONE

Confidentiality

High

Integrity

High

Availability

High

EPSS — Exploit Prediction Scoring System

Probability of exploitation within 30 days

12.4%

Percentile

96e

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

Patch information

Consult our PDF with remediations which you can find under [www.pilz.com/downloads](https://www.pilz.com/search#currentPage=1&SEARCH=Security%20Advis.%20IndustrialPI%20Remediat.). In order to activate the authentication as described in the PDF, you have to have the Node-RED service enabled via the web application.

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

53/ 100

Based on CVSS 10.0, EPSS 12.4%, 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

•Network access to the affected device or segment is required.
•No valid credentials are needed.
•No user interaction 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

•Change default or hardcoded credentials and restrict access to the management interface.
•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).
•Monitor for abnormal protocol traffic using an OT-aware detection system.

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 62443-4-2FR1 · Identificatie- en authenticatiebeheer

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

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