CVE-2025-40937
Unknown Unknown - Not Provided
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Publication date: 2025-12-09

Last updated on: 2025-12-10

Assigner: Siemens AG

Description
A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected application do not properly validate input parameters in its REST API, resulting in improper handling of unexpected arguments. This could allow an authenticated attacker to execute arbitrary code with limited privileges.
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Meta Information
Published
2025-12-09
Last Modified
2025-12-10
Generated
2026-06-16
AI Q&A
2025-12-09
EPSS Evaluated
2026-06-15
NVD
CVE-2025-40937
EUVD
EUVD-2025-201919
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
siemens simatic_cn_4100 *
siemens simatic_cn_4100_firmware to 4.0.1 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
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Executive Summary

This vulnerability exists in SIMATIC CN 4100 versions prior to V4.0.1, where the application does not properly validate input parameters in its REST API. This improper handling of unexpected arguments can allow an authenticated attacker to execute arbitrary code with limited privileges.

Impact Analysis

An authenticated attacker could exploit this vulnerability to execute arbitrary code on the affected system with limited privileges, potentially leading to unauthorized actions, data compromise, or disruption of services.

Mitigation Strategies

To mitigate this vulnerability, update SIMATIC CN 4100 to version V4.0.1 or later. Additionally, protect network access to the devices and follow Siemens' operational guidelines for Industrial Security. [1]

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