CVE-2026-25851
Received Received - Intake

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
2026-07-06
AI Q&A
2026-02-27
EPSS Evaluated
2026-07-05
NVD
CVE-2026-25851
EUVD
EUVD-2026-8937

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
chargemap chargemap.com *

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 involves WebSocket endpoints that do not have proper authentication mechanisms. Because of this, attackers can impersonate charging stations without authorization by connecting to the OCPP WebSocket endpoint using a known or discovered charging station identifier.

Once connected, the attacker can issue or receive OCPP commands as if they were a legitimate charger, enabling unauthorized control and manipulation of data sent to the backend.

Impact Analysis

The vulnerability can lead to privilege escalation and unauthorized control over the charging infrastructure.

Attackers can manipulate or corrupt charging network data reported to the backend, potentially disrupting operations or causing incorrect billing or usage data.

Compliance Impact

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