Summary
Heliox EV Chargers listed below contain improper access control vulnerability that could allow an attacker to reach unauthorized services via the charging cable. Siemens has released new versions for the affected products and recommends to update to the latest versions.
The following versions of Siemens Heliox EV Chargers are affected:
- Heliox Flex 180 kW EV Charging Station
- Heliox Mobile DC 40 kW EV Charging Station
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 2.6 | Siemens | Siemens Heliox EV Chargers | Improper Restriction of Communication Channel to Intended Endpoints |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Germany
Vulnerabilities
CVE-2025-27769
Affected devices contain improper access control that could allow an attacker to reach unauthorized services via the charging cable.
Affected Products
Siemens Heliox EV Chargers
Siemens
Heliox Flex 180 kW EV Charging Station, Heliox Mobile DC 40 kW EV Charging Station
known_affected
Remediations
Vendor fix
Contact customer support for patch information via OTA update
Relevant CWE: CWE-923 Improper Restriction of Communication Channel to Intended Endpoints
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 2.6 | LOW | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
Acknowledgments
- Siemens ProductCERT reported this vulnerability to CISA.
General Recommendations
As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens’ operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity
Additional Resources
For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories
Terms of Use
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities.
Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.
Locate control system networks and remote devices behind firewalls and isolate them from business networks.
When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices
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