EUVD-2025-208481

Comprehensive Technical Analysis of EUVD-2025-208481

1. Vulnerability Assessment and Severity Evaluation

Vulnerability Description: The vulnerability EUVD-2025-208481 affects Siemens SIMATIC S7-1500 series devices. These devices do not properly sanitize the contents of trace files, allowing an attacker to inject code through social engineering tactics, such as convincing a legitimate user to import a specially crafted trace file.

Severity Evaluation:

• Base Score: 9.4
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

The high base score of 9.4 indicates a critical vulnerability. The CVSS vector breakdown shows that the vulnerability can be exploited over the network (AV:N), requires low complexity (AC:L), does not need any special privileges (PR:N), but does require user interaction (UI:P). The impact on confidentiality, integrity, and availability is high (VC:H, VI:H, VA:H), and the scope change is also high (SC:H, SI:H, SA:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Social Engineering: An attacker could craft a malicious trace file and distribute it through phishing emails or other social engineering methods.
2. Supply Chain Attacks: Compromising third-party vendors or suppliers who provide trace files to Siemens devices.
3. Internal Threats: Malicious insiders with access to the affected devices could introduce the crafted trace files.

Exploitation Methods:

1. Code Injection: By embedding malicious code within the trace file, an attacker can execute arbitrary commands on the affected device.
2. Data Exfiltration: The injected code could be used to exfiltrate sensitive data from the device.
3. Denial of Service (DoS): The malicious code could disrupt the normal operation of the device, leading to a DoS condition.

3. Affected Systems and Software Versions

The vulnerability affects a wide range of Siemens SIMATIC S7-1500 series devices and software controllers. The affected products and versions include:

• SIMATIC S7-1500 CPU 1516pro-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1515-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 Software Controller Linux V2: All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP RAIL: All versions
• SIMATIC S7-1500 CPU 1515R-2 PN: All versions
• SIMATIC S7-1500 CPU 1517T-3 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1513R-1 PN: All versions
• SIMATIC S7-1500 CPU 1518T-3 PN: Versions <V4.1.2
• SIPLUS S7-1500 CPU 1518-4 PN/DP MFP: All versions
• SIMATIC S7-1500 CPU 1512C-1 PN: Versions <V4.1.2
• SIPLUS S7-1500 CPU 1515R-2 PN: All versions
• SIMATIC S7-1500 CPU 1516F-3 PN/DP: Versions <V4.1.2
• SIMATIC S7-1500 Software Controller CPU 1508S V3: All versions
• SIPLUS ET 200SP CPU 1512SP-1 PN RAIL: All versions
• SIMATIC S7-1500 Software Controller CPU 1507S V3: All versions
• SIMATIC S7-1500 CPU S7-1518-4 PN/DP ODK: All versions
• SIPLUS S7-1500 CPU 1517H-3 PN: All versions
• SIMATIC ET 200SP CPU 1512SP-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1511TF-1 PN: All versions
• SIMATIC S7-1500 CPU 1511F-1 PN: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S F V2: All versions
• SIMATIC S7-1500 Software Controller CPU 1507S F V2: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: All versions
• SIPLUS S7-1500 CPU 1511-1 PN T1 RAIL: All versions
• SIMATIC S7-1500 CPU 1512C-1 PN: All versions
• SIPLUS S7-1500 CPU 1511-1 PN: All versions
• SIMATIC S7-1500 CPU 1518TF-4 PN/DP: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S F V4: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: Versions <V4.1.2
• SIMATIC ET 200SP CPU 1510SP-1 PN: Versions <V4.1.2
• SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants): All versions
• SIMATIC S7-1500 Software Controller CPU 1508S F V3: All versions
• SIPLUS S7-1500 CPU 1511F-1 PN: All versions
• SIPLUS S7-1500 CPU 1511-1 PN TX RAIL: All versions
• SIMATIC S7-1500 CPU 1518T-4 PN/DP: All versions
• SIPLUS S7-1500 CPU 1513F-1 PN: All versions
• SIMATIC S7-1500 CPU 1518-4 PN/DP: All versions
• SIPLUS ET 200SP CPU 1512SP F-1 PN RAIL: All versions
• SIMATIC S7-1500 CPU 1518F-4 PN/DP: All versions
• SIMATIC S7-1500 CPU S7-1518F-4 PN/DP ODK: All versions
• SIMATIC S7-1500 ET 200pro: CPU 1516PRO F-2 PN: All versions
• SIMATIC ET 200SP CPU 1510SP F-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1516-3 PN/DP: Versions <V4.1.2
• SIPLUS ET 200SP CPU 1510SP F-1 PN: All versions
• SIMATIC S7-1500 CPU 1513F-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1518-4 PN/DP MFP: All versions
• SIMATIC S7-1500 CPU 1517-3 PN: Versions <V4.1.2
• SIMATIC ET 200SP CPU 1514SPT F-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 Software Controller Linux V3: All versions
• SIMATIC S7-1500 CPU 1515F-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1518TF-3 PN: Versions <V4.1.2
• SIMATIC ET 200SP CPU 1512SP-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 Software Controller CPU 1507S V4: All versions
• SIPLUS S7-1500 CPU 1515R-2 PN TX RAIL: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S V4: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: All versions
• SIPLUS S7-1500 CPU 1511-1 PN: All versions
• SIMATIC S7-1500 CPU 1518TF-4 PN/DP: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S F V4: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: All versions
• SIMATIC ET 200SP CPU 1510SP-1 PN: All versions
• SIMATIC S7-1500 CPU 1517F-3 PN/DP: All versions
• SIPLUS S7-1500 CPU 1515F-2 PN: All versions
• SIMATIC S7-1500 CPU 1518HF-4 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1516F-3 PN/DP: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1517H-3 PN: All versions
• SIMATIC S7-1500 CPU 1515-2 PN: All versions
• SIMATIC S7-1500 CPU 1516-3 PN/DP: All versions
• SIMATIC S7-1500 CPU 1516TF-3 PN/DP: All versions
• SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN: All versions
• SIMATIC S7-1500 CPU 1515TF-2 PN: All versions
• SIMATIC ET 200SP Open Controller CPU 1515SP PC3 (incl. SIPLUS variants) V3 CPUs - Windows OS: All versions
• SIPLUS S7-1500 CPU 1516-3 PN/DP: All versions
• SIMATIC S7-1500 Software Controller CPU 1507S F V3: All versions
• SIMATIC S7-1500 CPU 1517T-3 PN/DP: All versions
• SIMATIC ET 200SP CPU 1512SP F-1 PN: All versions
• SIMATIC S7-1500 CPU 1517-3 PN/DP: All versions
• SIPLUS ET 200SP CPU 1510SP F-1 PN RAIL: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S V2: All versions
• SIMATIC ET 200SP Open Controller CPU 1515SP PC3 (incl. SIPLUS variants) V2 CPUs - Windows OS: All versions
• SIPLUS S7-1500 CPU 1515F-2 PN T2 RAIL: All versions
• SIMATIC S7-1500 ET 200pro: CPU 1513PRO F-2 PN: All versions
• SIMATIC S7-1500 CPU 1517F-3 PN: Versions <V4.1.2
• SIPLUS S7-1500 CPU 1518-4 PN/DP: All versions
• SIPLUS S7-1500 CPU 1515F-2 PN RAIL: All versions
• SIMATIC S7-1500 CPU 1513pro-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1518-3 PN: Versions <V4.1.2
• SIPLUS S7-1500 CPU 1511-1 PN: All versions
• SIPLUS S7-1500 CPU 1516F-3 PN/DP RAIL: All versions
• SIMATIC S7-1500 Software Controller CPU 1507S F V4: All versions
• SIMATIC S7-1500 CPU 1511-1 PN: Versions <V4.1.2
• SIPLUS ET 200SP CPU 1512SP F-1 PN: All versions
• SIMATIC S7-1500 CPU 1511C-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 Software Controller CPU 1507S V2: All versions
• SIMATIC S7-1500 CPU 1515R-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1515T-2 PN: Versions <V4.1.2
• SIMATIC ET 200SP CPU 1514SP F-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1511C-1 PN: All versions
• SIMATIC S7-1500 CPU 1511TF-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1511T-1 PN: All versions
• SIMATIC S7-1500 CPU 1516T-3 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1517H-4 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1518F-3 PN: Versions <V4.1.2
• SIMATIC Drive Controller CPU 1507D TF: All versions
• SIMATIC S7-1500 CPU 1511TF-1 PN: All versions
• SIMATIC S7-1500 CPU 1511T-1 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1511-1 PN: All versions
• SIMATIC S7-1500 CPU 1517H-3 PN: All versions
• SIMATIC S7-1500 CPU 1515-2 PN: All versions
• SIMATIC S7-1500 CPU 1516-3 PN/DP: All versions
• SIMATIC S7-1500 CPU 1516TF-3 PN/DP: All versions
• SIMATIC S7-1500 ET 200pro: CPU 1513PRO-2 PN: All versions
• SIMATIC S7-1500 CPU 1515TF-2 PN: All versions
• SIMATIC ET 200SP Open Controller CPU 1515SP PC3 (incl. SIPLUS variants) V2 CPUs - Windows OS: All versions
• SIPLUS S7-1500 CPU 1518F-4 PN/DP: All versions
• SIPLUS S7-1500 CPU 1518HF-4 PN: All versions
• SIPLUS ET 200SP CPU 1510SP-1 PN RAIL: All versions
• SIMATIC S7-1500 Software Controller CPU 1508S TF V3: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: All versions
• SIPLUS S7-1500 CPU 1513-1 PN: All versions
• SIMATIC S7-PLCSIM Advanced: All versions
• SIMATIC S7-1500 CPU 1515T-2 PN: All versions
• SIMATIC S7-1500 CPU 1516T-3 PN/DP: All versions
• SIMATIC S7-1500 CPU 1517H-4 PN: All versions
• SIMATIC S7-1500 CPU 1518F-3 PN: All versions
• SIMATIC Drive Controller CPU 1504D TF: All versions
• SIMATIC S7-1500 CPU 1515TF-2 PN: Versions <V4.1.2
• SIMATIC S7-1500 CPU 1517TF-3 PN/DP: All versions
• SIMATIC S7-1500 CPU 1513R-1 PN: Versions <V4.1.2
• SIMATIC ET 200SP Open Controller CPU 1515SP PC3 (incl. SIPLUS variants) V3 CPUs - Industrial OS: All versions
• SIMATIC S7-1500 CPU 1513-1 PN: All versions

4. Recommended Mitigation Strategies

1. Patch Management:

   • Ensure all affected devices are updated to the latest software versions that address this vulnerability.
   • Implement a robust patch management program to regularly update all systems and devices.

2. User Awareness:

   • Conduct security awareness training to educate users about the risks of social engineering and the importance of verifying the authenticity of trace files before importing them.

3. Access Controls:

   • Implement strict access controls to limit who can import trace files into the affected devices.
   • Use role-based access control (RBAC) to ensure only authorized personnel have access to critical functions.

4. Network Segmentation:

   • Segment the network to isolate critical systems and reduce the attack surface.
   • Use firewalls and intrusion detection/prevention systems (IDS/IPS) to monitor and control network traffic.

5. Monitoring and Logging:

   • Enable comprehensive logging and monitoring to detect any suspicious activities related to trace file imports.
   • Regularly review logs for any anomalies or unauthorized access attempts.

6. Incident Response:

   • Develop and maintain an incident response plan to quickly address any security incidents related to this vulnerability.
   • Ensure the incident response team is trained and ready to handle potential attacks.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European industrial control systems (ICS) and operational technology (OT) environments, particularly in sectors such as manufacturing, energy, and critical infrastructure. The exploitation of this vulnerability could lead to:

• Operational Disruptions: Unauthorized code execution could disrupt industrial processes, leading to downtime and financial losses.
• Data Breaches: Sensitive data exfiltration could result in intellectual property theft or exposure of confidential information.
• Safety Risks: Compromised ICS could pose safety risks to personnel and the environment.
• Regulatory Compliance: Failure to address this vulnerability could result in non-compliance with European cybersecurity regulations and standards.

6. Technical Details for Security Professionals

Vulnerability Details:

• CVE ID: CVE-2025-40943
• Assigner: Siemens
• Affected Products: SIMATIC S7-1500 series devices and software controllers
• Vulnerability Type: Code Injection through unsanitized trace files
• Exploitation Requirements: Network access, low complexity, user interaction

Detection and Response:

• Detection: Implement IDS/IPS rules to detect suspicious network traffic related to trace file imports. Use file integrity monitoring (FIM) to detect unauthorized changes to trace files.
• Response: Isolate affected devices, apply patches, and conduct a thorough investigation to identify the source of the attack. Ensure all trace files are verified and sanitized before importing.

References:

• Siemens Security Advisory
• NVD Entry

By following these recommendations and staying vigilant, organizations can mitigate the risks associated with EUVD-2025-208481 and protect their critical infrastructure from potential attacks.