CVE-2026-24445 in EV Energy
Summary
by MITRE • 02/27/2026
The WebSocket Application Programming Interface lacks restrictions on the number of authentication requests. This absence of rate limiting may allow an attacker to conduct denial-of-service attacks by suppressing or mis-routing legitimate charger telemetry, or conduct brute-force attacks to gain unauthorized access.
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Analysis
by VulDB Data Team • 03/06/2026
The vulnerability identified as CVE-2026-24445 resides within the WebSocket Application Programming Interface implementation where insufficient controls exist to limit the volume of authentication requests that can be processed within a given timeframe. This weakness represents a critical security gap that directly violates fundamental principles of secure system design and access control mechanisms. The absence of rate limiting functionality creates an exploitable condition where malicious actors can overwhelm the authentication system through excessive request volumes without proper throttling or monitoring mechanisms in place.
This flaw operates at the intersection of several security domains including authentication management, resource exhaustion, and access control enforcement. The technical implementation lacks proper circuit breaker patterns or request limiting mechanisms that would normally be implemented to prevent abuse of authentication endpoints. Attackers can leverage this vulnerability to perform both denial-of-service attacks by flooding the system with authentication requests and brute-force attacks targeting valid credentials. The operational impact extends beyond simple service disruption as the vulnerability can be used to mask legitimate telemetry data from charging infrastructure, potentially compromising the integrity of critical operational information.
The vulnerability's exploitation directly relates to CWE-770, which addresses allocation of resources without limits or with inadequate limits, and CWE-307, which covers inadequate protection against brute force attacks. From an adversarial perspective, this weakness maps to multiple ATT&CK techniques including T1110 for credential stuffing and T1499 for network denial of service. The absence of authentication rate limiting creates a pathway for attackers to systematically test credentials against multiple user accounts, potentially gaining unauthorized access to systems that rely on WebSocket-based communication for charging station management.
The operational consequences of this vulnerability extend to industrial control systems and smart grid infrastructure where charging stations communicate telemetry data through WebSocket connections. Legitimate charger telemetry can be suppressed or misrouted when the system becomes overwhelmed by excessive authentication requests, creating potential safety and operational risks. Organizations implementing this technology face significant exposure to both service availability attacks and credential compromise scenarios that could result in unauthorized access to charging infrastructure management systems.
Mitigation strategies should include implementing robust rate limiting mechanisms at the WebSocket endpoint level with configurable thresholds for authentication requests per user, IP address, or session. The system should incorporate exponential backoff algorithms and account lockout mechanisms after repeated failed authentication attempts. Network-level controls should be deployed to monitor and limit traffic patterns that exceed normal operational baselines. Additionally, implementing authentication request queuing systems and circuit breaker patterns will help prevent complete service exhaustion while maintaining legitimate user access. Organizations should also consider implementing behavioral analytics to detect anomalous authentication request patterns that may indicate exploitation attempts.