Siemens SIMATIC CN 4100 up to 4.0.0 command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.3$5k-$25k0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC CN 4100 up to 4.0.0. It has been declared as critical. This impacts an unknown function. The manipulation results in command injection. This vulnerability is cataloged as CVE-2025-40937. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Siemens SIMATIC CN 4100 up to 4.0.0. Affected is some unknown processing. The manipulation with an unknown input leads to a command injection vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at cert-portal.siemens.com. This vulnerability is traded as CVE-2025-40937 since 04/16/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 12/11/2025). The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 4.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-201919). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.3

VulDB Base Score: 8.3
VulDB Temp Score: 7.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔒

CNA Base Score: 8.3
CNA Vector (siemens): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: SIMATIC CN 4100 4.0.1

Timelineinfo

04/16/2025 CVE reserved
12/09/2025 +237 days Advisory disclosed
12/09/2025 +0 days VulDB entry created
12/11/2025 +2 days VulDB entry last update

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-416652
Status: Confirmed

CVE: CVE-2025-40937 (🔒)
GCVE (CVE): GCVE-0-2025-40937
GCVE (VulDB): GCVE-100-335124
EUVD: 🔒

Entryinfo

Created: 12/09/2025 12:13
Updated: 12/11/2025 08:57
Changes: 12/09/2025 12:13 (77), 12/09/2025 15:39 (1), 12/11/2025 08:57 (11)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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