Summary
Frauscher Sensortechnik FDS101, FDS-SNMP101 and FDS102 for FAdC/FAdCi R2 and all previous versions are vulnerable to OS Command Injection via malicious configuration file.
CVE-2025-3626 affects FDS102 versions v2.8.0 < v2.13.3.
CVE-2025-3705 affects a broader range of products and versions. Specifically, it affects:
* FDS102 versions < v2.13.3
* FDS101 versions <= v1.4.25
* FDS-SNMP101 versions <= v.2.3.9
**Update 1.1.0, 29.07.2025:** The summary has been updated to include a mapping between CVEs and affected products, and the remediation section has been revised to include FDS101.
Details
Impact
This enables a remote or a local attacker to gain full control of the FDS101/FDS-SNMP101/FDS102 device.
Mitigation
Security-related application conditions SecRAC:
* The railway operator must ensure that only authorised personnel or people in the company of
authorised personnel have access to the Frauscher Diagnostic System FDS101/FDS-SNMP101/FDS102. This applies for both vulnerabilities.
* The recommendation is to connect the Frauscher Diagnostic System FDS102 to a network of category 2. If the Frauscher Diagnostic System FDS102 is connected to a network of category 3
(according to EN 50159:2010), then additional protective measures must be added. This applies for CVE-2025-3626.
Remediation
Update FDS101 or FDS102 to FDS102 v2.13.3 or higher.
Vulnerabilities 2
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Critical 9.1
OS Command Injection via Config Upload in WebUI
A remote attacker with administrator account can gain full control of the device due to improper neutralization of special elements used in an OS Command ('OS Command Injection') while uploading a config file via webUI.
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Medium 6.8
OS Command Injection via USB Config Load
A physical attacker with no privileges can gain full control of the affected device due to improper neutralization of special elements used in an OS Command ('OS Command Injection') when loading a config file from a USB drive.
Revision history
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#1.1.0
The summary has been updated to include a mapping between CVEs and affected products, and the remediation section has been revised to include FDS101.
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#1.0.0
Initial revision
References
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Frauscher advisory overview at CERT@VDE
https://certvde.com/de/advisories/vendor/frauscher/
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Frauscher PSIRT
https://www.frauscher.com/en/psirt
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VDE-2025-030: Frauscher: FDS101, FDS-SNMP101 and FDS102 for FAdC/FAdCi are Vulnerable to OS Command Injection Vulnerability - HTML
https://certvde.com/en/advisories/VDE-2025-030/