CVE-2026-20781
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 in industrial/IoT device management allows unauthenticated attackers to perform station impersonation, data injection, and denial of service. One of several related CVEs affecting the same WebSocket endpoints.
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: Identify and inventory all WebSocket endpoints in production; assess exposure scope and enable enhanced logging on affected systems. Within 7 days: Implement compensating controls (WAF rules, IP whitelisting, network segmentation); conduct threat hunt for suspicious WebSocket activity. …
Sign in for detailed remediation steps.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today