Siemens SCALANCE LPE9403 up to 3.x SNMP User os command injection

Summaryinfo

A vulnerability marked as critical has been reported in Siemens SCALANCE LPE9403 up to 3.x. This vulnerability affects unknown code of the component SNMP User Handler. Performing a manipulation results in os command injection. This vulnerability is reported as CVE-2025-27394. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Siemens SCALANCE LPE9403 up to 3.x. It has been classified as critical. This affects an unknown code of the component SNMP User Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0). Affected devices do not properly sanitize user input when creating new SNMP users. This could allow an authenticated highly-privileged remote attacker to execute arbitrary code on the device.

It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2025-27394 since 02/24/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are required for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/22/2025). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 4.0 eliminates this vulnerability.

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Productinfo

Vendor

• Siemens

Name

• SCALANCE LPE9403

Version

• 3.x

License

• commercial

Website

• Vendor: https://www.siemens.com/

CPE 2.3info

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CPE 2.2info

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