Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally
Description
Improper handling of insufficient permissions or privileges in Windows Error Reporting allows an authorized attacker to elevate privileges locally
Remediation
Apply vendor security updates immediately. Monitor for exploitation attempts and review access logs.
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VENDOR: OCPP Implementations
PRODUCT: OCPP WebSocket Endpoint
AFFECTED_VERSIONS: See vendor advisory
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Description Summary:
A lack of authentication in OCPP WebSocket endpoints allows unauthenticated attackers to impersonate charging stations and manipulate charging network data.
Executive Summary:
The absence of authentication on OCPP WebSocket endpoints allows unauthenticated attackers to impersonate charging stations, leading to unauthorized control of EV infrastructure.
Vulnerability Details
CVE-ID: CVE-2026-20781
Affected Software: OCPP WebSocket Implementations
Affected Versions: See vendor advisory for specific affected versions
Vulnerability: WebSocket endpoints fail to implement proper authentication mechanisms. An unauthenticated attacker can connect using a known charging station identifier and issue or receive OCPP commands as if they were a legitimate charger.
Business Impact
This vulnerability allows for privilege escalation and unauthorized control over EV charging infrastructure. Attackers could manipulate charging sessions, corrupt billing data, or cause localized grid disruptions. With a CVSS score of 9.4, the risk to the reliability and financial integrity of charging networks is critical.
Remediation Plan
Immediate Action: Implement mandatory WebSocket authentication (e.g., Basic Auth or TLS certificates) as specified in the latest OCPP security profiles.
Proactive Monitoring: Review WebSocket connection logs for multiple connections using the same identifier or connections originating from unexpected IP addresses.
Compensating Controls: Implement network-level filtering to ensure only known charging station IP ranges can connect to the backend WebSocket server.
Exploitation Status
Public Exploit Available: No
Analyst Notes: As of Feb 27, 2026, there is no public information indicating active exploitation. The vulnerability stems from a fundamental lack of security in the communication protocol implementation.
Analyst Recommendation
Securing the communication between charging stations and the backend is vital for the safety and reliability of EV networks. Organizations must enforce strict authentication for all WebSocket connections immediately.