EUVD-2026-10035

Comprehensive Technical Analysis of EUVD-2026-10035

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2026-10035 pertains to the lack of proper authentication mechanisms in WebSocket endpoints, specifically within the OCPP (Open Charge Point Protocol) framework. This flaw allows unauthenticated attackers to impersonate charging stations and manipulate data sent to the backend. The severity of this vulnerability is rated with a CVSS (Common Vulnerability Scoring System) base score of 9.3, indicating a critical risk.

CVSS Vector Breakdown:

• AV:N (Network Vector): The vulnerability is exploitable over the network.
• AC:L (Low Complexity): The attack requires low skill or resources.
• AT:N (No Authentication): No authentication is required to exploit the vulnerability.
• PR:N (No Privileges Required): No privileges are needed to exploit the vulnerability.
• UI:N (No User Interaction): No user interaction is required.
• VC:H (High Confidentiality Impact): The vulnerability has a high impact on confidentiality.
• VI:H (High Integrity Impact): The vulnerability has a high impact on integrity.
• VA:L (Low Availability Impact): The vulnerability has a low impact on availability.
• SC:N (No Change in Scope): The vulnerability does not change the security scope.
• SI:N (No Change in Impact): The vulnerability does not change the impact.
• SA:N (No Change in Attack Vector): The vulnerability does not change the attack vector.

2. Potential Attack Vectors and Exploitation Methods

• Unauthorized Access: An attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier without any authentication.
• Data Manipulation: The attacker can issue or receive OCPP commands as a legitimate charger, leading to unauthorized control of charging infrastructure.
• Privilege Escalation: The lack of authentication can result in privilege escalation, allowing the attacker to perform actions typically reserved for authenticated users.
• Data Corruption: The attacker can corrupt the charging network data reported to the backend, affecting the integrity and reliability of the system.

3. Affected Systems and Software Versions

The vulnerability affects all versions of the api.everon.io product by Everon. This includes any system or software that integrates with the OCPP WebSocket endpoints provided by Everon.

4. Recommended Mitigation Strategies

• Implement Authentication: Ensure that all WebSocket endpoints require proper authentication mechanisms, such as token-based authentication or certificate-based authentication.
• Access Controls: Enforce strict access controls to limit who can connect to the WebSocket endpoints.
• Monitoring and Logging: Implement robust monitoring and logging to detect and respond to unauthorized access attempts.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.
• Patch Management: Apply patches and updates provided by the vendor as soon as they are available.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly in the context of critical infrastructure such as electric vehicle (EV) charging networks. Unauthorized control of charging infrastructure can lead to service disruptions, financial losses, and potential safety risks. The high CVSS score underscores the need for immediate attention and mitigation efforts to protect the integrity and reliability of EV charging systems.

6. Technical Details for Security Professionals

• Vulnerability Identification: The vulnerability is identified as CVE-2026-26288 and is assigned by icscert.
• References:
  • CISA ICS Advisory
  • GitHub CSAF Repository
  • NVD Detail
• Technical Mitigation:
  • Authentication Mechanisms: Implement OAuth 2.0, JWT (JSON Web Tokens), or other secure authentication methods.
  • Encryption: Ensure that all communications over WebSocket endpoints are encrypted using TLS/SSL.
  • Rate Limiting: Implement rate limiting to prevent brute-force attacks on WebSocket endpoints.
  • Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activities on WebSocket endpoints.

By addressing these technical details and implementing the recommended mitigation strategies, organizations can significantly reduce the risk associated with this vulnerability and enhance the overall security of their EV charging infrastructure.