critical severity August 25, 2026 · 1 min read

CISA ICS Advisory: Siemens SIMATIC IoT2050 Advanced

Here’s what this advisory affects, and what to do about it.

SIMATIC IoT2050 Advanced devices running Industrial OS with Node-RED installed contain a missing authentication vulnerability in the Node-RED HTTP interface that could allow an unauthenticated remote attacker to create malicious flows and execute arbitrary code on the underlying server with maximum privileges. Siemens has released a new version for SIMATIC IoT2050 Advanced and strongly recommends to update to the latest version. The following versions of Siemens SIMATIC IoT2050 Advanced are affected: SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) vers:intdot/

CISA ICS Advisory: Siemens SIMATIC IoT2050 Advanced

CISA published an ICS advisory on August 25, 2026, warning that certain Siemens SIMATIC IoT2050 Advanced devices contain a missing authentication vulnerability in the Node-RED HTTP interface.

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Missing authentication in Node-RED HTTP interface

The advisory states that SIMATIC IoT2050 Advanced devices running Industrial OS with Node-RED installed have no authentication on the Node-RED HTTP interface. Successful exploitation could allow an unauthenticated remote attacker to create malicious flows and execute arbitrary code on the underlying server with maximum privileges.

Affected products

The advisory names the following affected product:

SIMATIC IoT2050 Advanced (6ES7647-0BA00-1YA2) running Industrial OS with Node-RED installed.

It does not specify whether the vulnerability has been exploited in the wild.

What to do

Update affected SIMATIC IoT2050 Advanced devices to the latest version released by Siemens.
Determine whether any SIMATIC IoT2050 Advanced devices in your environment are running Industrial OS with Node-RED installed.
Follow Siemens’ recommended mitigations for the missing authentication vulnerability.
Monitor Siemens’ official product security channel for additional updates on this advisory.

Organisations operating industrial control systems and edge computing devices should treat this as a high-priority update because the flaw grants unauthenticated remote code execution at maximum privilege level.

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Sources: CISA ICS Advisory

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