CVE-2026-27028
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Unauthenticated WebSocket Access Enables OCPP Station Impersonation

Publication date: 2026-02-27

Last updated on: 2026-03-05

Assigner: ICS-CERT

Description
WebSocket endpoints lack proper authentication mechanisms, enabling attackers to perform unauthorized station impersonation and manipulate data sent to the backend. An unauthenticated attacker can connect to the OCPP WebSocket endpoint using a known or discovered charging station identifier, then issue or receive OCPP commands as a legitimate charger. Given that no authentication is required, this can lead to privilege escalation, unauthorized control of charging infrastructure, and corruption of charging network data reported to the backend.
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Meta Information
Published
2026-02-27
Last Modified
2026-03-05
Generated
2026-06-16
AI Q&A
2026-02-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-27028
EUVD
EUVD-2026-8963
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mobility46 mobility46.se *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-306 The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
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Executive Summary

This vulnerability occurs because WebSocket endpoints used by charging stations lack proper authentication mechanisms. This allows attackers to connect to the OCPP WebSocket endpoint without needing to authenticate themselves.

An attacker can impersonate a legitimate charging station by using a known or discovered charging station identifier. Once connected, the attacker can issue or receive OCPP commands as if they were the legitimate charger.

Impact Analysis

The vulnerability can lead to unauthorized control over charging infrastructure, allowing attackers to escalate privileges and manipulate the charging network.

Attackers can corrupt data reported to the backend, potentially causing operational disruptions or incorrect billing information.

Compliance Impact

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