CVE-2026-25192

CTEK Chargeportal Missing Authentication for Critical Function

Published Mar 20, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Workaround

CTEK will be sunsetting this product in April 2026. Please contact CTEK for more information  https://www.ctek.com/support .

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Ctek charge Portal
CPEs cpe:2.3:a:ctek:charge_portal:-:*:*:*:*:*:*:*
Vendors & Products Ctek charge Portal
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ctek
Ctek chargeportal
Vendors & Products Ctek
Ctek chargeportal
Type Values Removed Values Added
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.
Title CTEK Chargeportal Missing Authentication for Critical Function
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Mar 23, 2026, 2:15 PM
Reserved
Mar 12, 2026, 4:52 PM
Status
Analyzed
Published
Mar 20, 2026, 11:16 PM
Modified
Jun 17, 2026, 10:24 AM