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CVE-2026-40702 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

WebSocket endpoints lack proper authentication mechanisms, enabling attackers to impersonate charging stations. As a result, attackers can exploit this weakness to gain unauthorized access to sensitive data or perform unauthorized actions. Given that no authentication is required, this can lead to privilege escalation and potentially compromise the security of the entire system.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:8.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CNA: [email protected]CVSS-B:9.4 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://evokesystems.com/contact-us/	[email protected]	Vendor
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-176-02.json	[email protected]	AdvisoryBundleRemedy
https://www.cisa.gov/news-events/ics-advisories/icsa-26-176-02	[email protected]	AdvisoryBundleRemedy

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-306	Missing Authentication for Critical Function	[email protected]

Affected Products

Product	Versions
EVoke Systems Charging Station Management System	<= 0
CPE No CPEs found in CPE dictionary for this product. Remediation Mitigation:low effort Only allow a single active connection per charger ID. If a second connection using the same charger ID is detected, reject the new connection or terminate the previous session. Mitigation:low effort Monitor session anomalies including repeated connection attempts, unexpected IP address changes, and abnormal message patterns. Log and flag security events for operational review. Mitigation:low effort Implement connection rate limiting at the WebSocket gateway layer to restrict excessive connection attempts from the same source and temporarily block abusive traffic patterns. Mitigation:low effort Develop a lifecycle policy for legacy chargers that cannot support modern OCPP security profiles. This policy will include identification of unsupported EVSE models and risk classification, as well as migration planning with site operators where possible. Workaround:low efforthttps://evokesystems.com/contact-us/ Contact EVoke for more information.

Product

Versions

EVoke Systems Charging Station Management System

<= 0

CPE

No CPEs found in CPE dictionary for this product.

Remediation

Mitigation:low effort
Only allow a single active connection per charger ID. If a second connection using the same charger ID is detected, reject the new connection or terminate the previous session.
Mitigation:low effort
Monitor session anomalies including repeated connection attempts, unexpected IP address changes, and abnormal message patterns. Log and flag security events for operational review.
Mitigation:low effort
Implement connection rate limiting at the WebSocket gateway layer to restrict excessive connection attempts from the same source and temporarily block abusive traffic patterns.
Mitigation:low effort
Develop a lifecycle policy for legacy chargers that cannot support modern OCPP security profiles. This policy will include identification of unsupported EVSE models and risk classification, as well as migration planning with site operators where possible.
Workaround:low efforthttps://evokesystems.com/contact-us/
Contact EVoke for more information.

Change History

2 change records found show changes

Date	Action	Recorded By
Jun 26, 2026	CVE Modified	CISA-ADP
Jun 25, 2026	New CVE Received	[email protected]