CVE-2025-40938

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device stores sensitive information in the firmware. This could allow an attacker to access and misuse this information, potentially impacting the device’s confidentiality, integrity, and availability.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://cert-portal.siemens.com/productcert/html/ssa-416652.html	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:siemens:simatic_cn_4100_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:siemens:simatic_cn_4100:-:*:*:*:*:*:*:*

History

10 Dec 2025, 21:36

Type	Values Removed	Values Added
First Time		Siemens Siemens simatic Cn 4100 Firmware Siemens simatic Cn 4100
References	~~() https://cert-portal.siemens.com/productcert/html/ssa-416652.html -~~	() https://cert-portal.siemens.com/productcert/html/ssa-416652.html - Vendor Advisory
CPE		cpe:2.3:o:siemens:simatic_cn_4100_firmware:::::::: cpe:2.3:h:siemens:simatic_cn_4100:-:::::::*

09 Dec 2025, 16:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-12-09 16:17

Updated : 2025-12-10 21:36

NVD link : CVE-2025-40938

Mitre link : CVE-2025-40938

CVE.ORG link : CVE-2025-40938

JSON object : View

Products Affected

siemens

simatic_cn_4100
simatic_cn_4100_firmware

CWE

CWE-798

Use of Hard-coded Credentials

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