Siemens VersiCharge AC Series EV Chargers  – All CISA Advisories

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global).

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1. EXECUTIVE SUMMARY

• CVSS v4 8.7
• ATTENTION: Exploitable from adjacent network/low attack complexity
• Vendor: Siemens
• Equipment: VersiCharge AC Series EV Chargers
• Vulnerabilities: Missing Immutable Root of Trust in Hardware, Initialization of a Resource with an Insecure Default

2. RISK EVALUATION

Successful exploitation of these vulnerabilities could allow an attacker to gain control of the chargers through default Modbus port or execute arbitrary code by manipulating the M0 firmware.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

Siemens reports that the following products are affected:

• Siemens IEC 1Ph 7.4kW Child socket (8EM1310-2EH04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent socket (8EM1310-2EH04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 1Ph 7.4kW Parent socket incl. SIM (8EM1310-2EH04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent socket incl. SIM (8EM1310-2EH04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 1Ph 7.4kW Parent socket/ shutter (8EM1310-2EN04-3GA1): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent socket/ shutter (8EM1310-2EN04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 1Ph 7.4kW Parent socket/ shutter SIM (8EM1310-2EN04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent socket/ shutter SIM (8EM1310-2EN04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Child cable 7m (8EM1310-3EJ04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Child cable 7m (8EM1310-3EJ04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Child socket (8EM1310-3EH04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Child socket (8EM1310-2EH04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Child socket (8EM1310-3EH04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Child socket/ shutter (8EM1310-3EN04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Child socket/ shutter (8EM1310-3EN04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent cable 7m (8EM1310-3EJ04-3GA1): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent cable 7m (8EM1310-3EJ04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent cable 7m incl. SIM (8EM1310-3EJ04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent cable 7m incl. SIM (8EM1310-3EJ04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent socket (8EM1310-3EH04-3GA1): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent socket (8EM1310-3EH04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent socket incl. SIM (8EM1310-3EH04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Child socket/ shutter (8EM1310-2EN04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent socket incl. SIM (8EM1310-3EH04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent socket/ shutter (8EM1310-3EN04-3GA1): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent socket/ shutter (8EM1310-3EN04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 3Ph 22kW Parent socket/ shutter SIM (8EM1310-3EN04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC 3Ph 22kW Parent socket/ shutter SIM (8EM1310-3EN04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA1): All versions (CVE-2025-31929)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Child socket/ shutter (8EM1310-2EN04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Child socket (8EM1310-3FH04-0GA0): All versions (CVE-2025-31929)
• Siemens IEC ERK 3Ph 22 kW Child socket (8EM1310-3FH04-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Parent socket (8EM1310-3FH04-3GA1): All versions (CVE-2025-31929)
• Siemens IEC ERK 3Ph 22 kW Parent socket (8EM1310-3FH04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC ERK 3Ph 22 kW Parent socket incl. SI (8EM1310-3FH04-3GA2): All versions (CVE-2025-31929)
• Siemens IEC ERK 3Ph 22 kW Parent socket incl. SI (8EM1310-3FH04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Cellular 48A NTEP (8EM1310-5HF14-1GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Cellular 48A NTEP (8EM1310-5HF14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Child 40A w/ 15118 HW (8EM1310-4CF14-0GA0): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent cable 7m (8EM1310-2EJ04-3GA1): All versions (CVE-2025-31929)
• Siemens UL Commercial Child 40A w/ 15118 HW (8EM1310-4CF14-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Child 48A BA Compliant (8EM1315-5CG14-0GA0): All versions (CVE-2025-31929)
• Siemens UL Commercial Child 48A BA Compliant (8EM1315-5CG14-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Child 48A w/ 15118 HW (8EM1310-5CF14-0GA0): All versions (CVE-2025-31929)
• Siemens UL Commercial Child 48A w/ 15118 HW (8EM1310-5CF14-0GA0): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 40A with Simcard (8EM1310-4CF14-1GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 40A with Simcard (8EM1310-4CF14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A (USPS) (8EM1317-5CG14-1GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A (USPS) (8EM1317-5CG14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A BA Compliant (8EM1315-5CG14-1GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent cable 7m (8EM1310-2EJ04-3GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A BA Compliant (8EM1315-5CG14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A with Simcard BA (8EM1310-5CF14-1GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A with Simcard BA (8EM1310-5CF14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A,15118 25ft Sim (8EM1310-5CG14-1GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A,15118 25ft Sim (8EM1310-5CG14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1310-5CG14-1GA1): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1310-5CG14-1GA1): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1314-5CG14-2FA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1314-5CG14-2FA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1315-5HG14-1GA2): All versions (CVE-2025-31929)
• Siemens IEC 1Ph 7.4kW Parent cable 7m incl. SIM (8EM1310-2EJ04-3GA2): All versions (CVE-2025-31929)
• Siemens UL Commercial Parent 48A, 15118, 25ft (8EM1315-5HG14-1GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens UL Resi High End 40A w/15118 Hw (8EM1312-4CF18-0FA3): All versions (CVE-2025-31929)
• Siemens UL Resi High End 48A w/15118 Hw (8EM1312-5CF18-0FA3): All versions (CVE-2025-31929)
• Siemens VersiCharge Blue™ 80A AC Cellular (8EM1315-7BG16-1FH2): All versions (CVE-2025-31929)
• Siemens VersiCharge Blue™ 80A AC Cellular (8EM1315-7BG16-1FH2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 1Ph 7.4kW Parent cable 7m incl. SIM (8EM1310-2EJ04-3GA2): All versions prior to V2.135 (CVE-2025-31930)
• Siemens IEC 1Ph 7.4kW Parent socket (8EM1310-2EH04-3GA1): All versions (CVE-2025-31929)

3.2 VULNERABILITY OVERVIEW

3.2.1 MISSING IMMUTABLE ROOT OF TRUST IN HARDWARE CWE-1326

The affected devices do not contain an Immutable Root of Trust in the M0 Hardware. An attacker with physical access to the device could use this to execute arbitrary code.

CVE-2025-31929 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N).

A CVSS v4 score has also been calculated for CVE-2025-31929. A base score of 4.1 has been calculated; the CVSS vector string is (CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N).

3.2.2 INITIALIZATION OF A RESOURCE WITH AN INSECURE DEFAULT CWE-1188

The affected devices contain the Modbus service enabled by default. This could allow an attacker connected to the same network to remotely control the EV charger.

CVE-2025-31930 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.8 has been calculated; the CVSS vector string is (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

A CVSS v4 score has also been calculated for CVE-2025-31930. A base score of 8.7 has been calculated; the CVSS vector string is (CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Energy
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Germany

3.4 RESEARCHER

Siemens reported these vulnerabilities to CISA.

4. MITIGATIONS

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

• (CVE-2025-31929) IEC 1Ph 7.4kW Child socket (8EM1310-2EH04-0GA0), IEC 1Ph 7.4kW Child socket/ shutter (8EM1310-2EN04-0GA0), IEC 1Ph 7.4kW Parent cable 7m (8EM1310-2EJ04-3GA1), IEC 1Ph 7.4kW Parent cable 7m incl. SIM (8EM1310-2EJ04-3GA2), IEC 1Ph 7.4kW Parent socket (8EM1310-2EH04-3GA1), IEC 1Ph 7.4kW Parent socket incl. SIM (8EM1310-2EH04-3GA2), IEC 1Ph 7.4kW Parent socket/ shutter (8EM1310-2EN04-3GA1), IEC 1Ph 7.4kW Parent socket/ shutter SIM (8EM1310-2EN04-3GA2), IEC 3Ph 22kW Child cable 7m (8EM1310-3EJ04-0GA0), IEC 3Ph 22kW Child socket (8EM1310-3EH04-0GA0), IEC 3Ph 22kW Child socket/ shutter (8EM1310-3EN04-0GA0), IEC 3Ph 22kW Parent cable 7m (8EM1310-3EJ04-3GA1), IEC 3Ph 22kW Parent cable 7m incl. SIM (8EM1310-3EJ04-3GA2), IEC 3Ph 22kW Parent socket (8EM1310-3EH04-3GA1), IEC 3Ph 22kW Parent socket incl. SIM (8EM1310-3EH04-3GA2), IEC 3Ph 22kW Parent socket/ shutter (8EM1310-3EN04-3GA1), IEC 3Ph 22kW Parent socket/ shutter SIM (8EM1310-3EN04-3GA2), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA0), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA1), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA2), IEC ERK 3Ph 22 kW Child socket (8EM1310-3FH04-0GA0), IEC ERK 3Ph 22 kW Parent socket (8EM1310-3FH04-3GA1), IEC ERK 3Ph 22 kW Parent socket incl. SI (8EM1310-3FH04-3GA2), UL Commercial Cellular 48A NTEP (8EM1310-5HF14-1GA2), UL Commercial Child 40A w/ 15118 HW (8EM1310-4CF14-0GA0), UL Commercial Child 48A BA Compliant (8EM1315-5CG14-0GA0), UL Commercial Child 48A w/ 15118 HW (8EM1310-5CF14-0GA0), UL Commercial Parent 40A with Simcard (8EM1310-4CF14-1GA2), UL Commercial Parent 48A (USPS) (8EM1317-5CG14-1GA2), UL Commercial Parent 48A BA Compliant (8EM1315-5CG14-1GA2), UL Commercial Parent 48A with Simcard BA (8EM1310-5CF14-1GA2), UL Commercial Parent 48A, 15118, 25ft (8EM1310-5CG14-1GA1), UL Commercial Parent 48A, 15118, 25ft (8EM1314-5CG14-2FA2), UL Commercial Parent 48A, 15118, 25ft (8EM1315-5HG14-1GA2), UL Commercial Parent 48A,15118 25ft Sim (8EM1310-5CG14-1GA2), UL Resi High End 40A w/15118 Hw (8EM1312-4CF18-0FA3), UL Resi High End 48A w/15118 Hw (8EM1312-5CF18-0FA3), VersiCharge Blue™ 80A AC Cellular (8EM1315-7BG16-1FH2): Currently no fix is planned
• (CVE-2025-31930) IEC 1Ph 7.4kW Child socket (8EM1310-2EH04-0GA0), IEC 1Ph 7.4kW Child socket/ shutter (8EM1310-2EN04-0GA0), IEC 1Ph 7.4kW Parent cable 7m (8EM1310-2EJ04-3GA1), IEC 1Ph 7.4kW Parent cable 7m incl. SIM (8EM1310-2EJ04-3GA2), IEC 1Ph 7.4kW Parent socket (8EM1310-2EH04-3GA1), IEC 1Ph 7.4kW Parent socket incl. SIM (8EM1310-2EH04-3GA2), IEC 1Ph 7.4kW Parent socket/ shutter (8EM1310-2EN04-3GA1), IEC 1Ph 7.4kW Parent socket/ shutter SIM (8EM1310-2EN04-3GA2), IEC 3Ph 22kW Child cable 7m (8EM1310-3EJ04-0GA0), IEC 3Ph 22kW Child socket (8EM1310-3EH04-0GA0), IEC 3Ph 22kW Child socket/ shutter (8EM1310-3EN04-0GA0), IEC 3Ph 22kW Parent cable 7m (8EM1310-3EJ04-3GA1), IEC 3Ph 22kW Parent cable 7m incl. SIM (8EM1310-3EJ04-3GA2), IEC 3Ph 22kW Parent socket (8EM1310-3EH04-3GA1), IEC 3Ph 22kW Parent socket incl. SIM (8EM1310-3EH04-3GA2), IEC 3Ph 22kW Parent socket/ shutter (8EM1310-3EN04-3GA1), IEC 3Ph 22kW Parent socket/ shutter SIM (8EM1310-3EN04-3GA2), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA0), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA1), IEC ERK 3Ph 22 kW Child cable 7m (8EM1310-3FJ04-0GA2), IEC ERK 3Ph 22 kW Child socket (8EM1310-3FH04-0GA0), IEC ERK 3Ph 22 kW Parent socket (8EM1310-3FH04-3GA1), IEC ERK 3Ph 22 kW Parent socket incl. SI (8EM1310-3FH04-3GA2), UL Commercial Cellular 48A NTEP (8EM1310-5HF14-1GA2), UL Commercial Child 40A w/ 15118 HW (8EM1310-4CF14-0GA0), UL Commercial Child 48A BA Compliant (8EM1315-5CG14-0GA0), UL Commercial Child 48A w/ 15118 HW (8EM1310-5CF14-0GA0), UL Commercial Parent 40A with Simcard (8EM1310-4CF14-1GA2), UL Commercial Parent 48A (USPS) (8EM1317-5CG14-1GA2), UL Commercial Parent 48A BA Compliant (8EM1315-5CG14-1GA2), UL Commercial Parent 48A with Simcard BA (8EM1310-5CF14-1GA2), UL Commercial Parent 48A, 15118, 25ft (8EM1310-5CG14-1GA1), UL Commercial Parent 48A, 15118, 25ft (8EM1314-5CG14-2FA2), UL Commercial Parent 48A, 15118, 25ft (8EM1315-5HG14-1GA2), UL Commercial Parent 48A,15118 25ft Sim (8EM1310-5CG14-1GA2), VersiCharge Blue™ 80A AC Cellular (8EM1315-7BG16-1FH2): Update to V2.135 or later version. The latest version will be pushed to the device OTA if the charger is completely commissioned and connected to Siemens Device Management. Contact Siemens Customer Service for further assistance or troubleshooting.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-556937 in HTML and CSAF.

CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

• Do not click web links or open attachments in unsolicited email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time. These vulnerabilities are not exploitable remotely.

5. UPDATE HISTORY

May 15, 2025: Initial Republication of Siemens Advisory SSA-556937

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