CVE-2026-25114 identifies a vulnerability in the CloudCharge cloudcharge.se platform's WebSocket API, specifically a lack of restrictions on the number of authentication requests (CWE-307: Improper Restriction of Excessive Authentication Attempts). This flaw allows an attacker to flood the authentication mechanism with excessive requests without any rate limiting, which can lead to two primary attack vectors: denial-of-service (DoS) and brute-force attacks. In a DoS scenario, the attacker can suppress or mis-route legitimate charger telemetry data, effectively disrupting the normal operation and monitoring of charging stations managed via the platform. Alternatively, the attacker can attempt brute-force authentication attacks to gain unauthorized access to the system, potentially compromising control over charging infrastructure. The vulnerability affects all versions of the product and can be exploited remotely without requiring prior authentication or user interaction, increasing the attack surface. The CVSS v3.1 base score of 7.5 reflects a high severity, primarily due to the network attack vector, low attack complexity, no privileges required, and no user interaction needed, with a significant impact on availability but no direct impact on confidentiality or integrity. No patches or known exploits are currently available, indicating the need for proactive mitigation. The lack of rate limiting on WebSocket authentication requests is a critical design oversight that undermines the resilience of the platform against automated attacks.

The primary impact of CVE-2026-25114 is on the availability of CloudCharge's charging infrastructure management services. By enabling denial-of-service attacks through overwhelming authentication requests, attackers can disrupt telemetry data flow, leading to loss of monitoring and control over charging stations. This can cause operational downtime, affecting end-users relying on electric vehicle charging services and potentially leading to financial losses and reputational damage for service providers. Additionally, the brute-force attack vector threatens the integrity and security of the system by allowing unauthorized access if successful, which could lead to manipulation of charging operations or data theft. Since the vulnerability requires no authentication and can be exploited remotely, the scope of affected systems is broad, especially in environments where CloudCharge is widely deployed. The lack of known exploits currently limits immediate widespread impact, but the ease of exploitation and high severity score indicate a significant risk if attackers develop exploit tools. Organizations worldwide that depend on CloudCharge for critical infrastructure management face potential service interruptions and security breaches, emphasizing the need for urgent mitigation.

To mitigate CVE-2026-25114 effectively, organizations should implement strict rate limiting on authentication requests at the WebSocket API level to prevent excessive attempts from a single source or IP range. Deploying Web Application Firewalls (WAFs) with custom rules to detect and block abnormal authentication request patterns can provide an additional layer of defense. Monitoring and alerting on unusual spikes in authentication traffic will help identify potential attack attempts early. Employing multi-factor authentication (MFA) where possible can reduce the risk of successful brute-force attacks. Network segmentation and limiting exposure of the WebSocket API to trusted networks or VPNs can reduce the attack surface. CloudCharge vendors and users should prioritize the development and deployment of patches or updates that address this vulnerability by introducing built-in rate limiting and authentication throttling mechanisms. Regular security assessments and penetration testing focusing on authentication mechanisms are recommended to identify similar weaknesses. Finally, maintaining an incident response plan that includes scenarios involving DoS and brute-force attacks on critical infrastructure will improve organizational readiness.