CVE-2026-27028
CRITICALCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Lifecycle Timeline
2Description
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.
Analysis
Missing WebSocket authentication — sixth CVE in the industrial platform WebSocket family. Same pattern of unauthenticated access enabling station impersonation and data injection.
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Remediation
Within 24 hours: Identify all systems exposing affected WebSocket endpoints and assess current traffic; isolate critical systems from untrusted networks if possible. Within 7 days: Implement network segmentation to restrict WebSocket access to authorized networks only, deploy WAF rules to enforce additional validation on WebSocket handshakes, and enable enhanced logging/monitoring. …
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External POC / Exploit Code
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