Overview
CVE-2025-24003 is a highly severe vulnerability that allows an unauthenticated remote attacker to exploit charging stations that comply with the German Calibration Law (Eichrecht). The vulnerability lies in the handling of MQTT messages, which can trigger out-of-bounds writes in the charging stations. This vulnerability particularly affects EichrechtAgents, leading to a loss of integrity and potentially causing a denial-of-service for these stations. Given the widespread reliance on charging stations in today’s environmentally conscious world, this vulnerability presents a significant risk that needs to be addressed urgently to prevent widespread disruption and potential data leakage.
Vulnerability Summary
CVE ID: CVE-2025-24003
Severity: High (8.2 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Loss of integrity for EichrechtAgents, potential denial-of-service for affected charging stations, and potential system compromise or data leakage.
Affected Products
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Product | Affected Versions
Charging stations complying with Eichrecht | All Versions
How the Exploit Works
The exploit takes advantage of the improper handling of MQTT messages by the affected charging stations. An unauthenticated remote attacker can send specially crafted MQTT messages to the charging station. These messages can trigger out-of-bounds writes, corrupting data and causing unexpected behavior. This could potentially lead to a loss of integrity for EichrechtAgents and a potential denial-of-service for the charging stations. In extreme cases, this vulnerability could even lead to system compromise or data leakage.
Conceptual Example Code
Here’s a conceptual representation of how the vulnerability might be exploited. This example assumes that the attacker knows the IP address of the charging station and is able to send MQTT messages to it.
# An attacker might use a tool like mosquitto_pub to publish a malicious MQTT message:
mosquitto_pub -h <charging_station_ip> -t <topic> -m '{ "malicious_payload": "..." }'Please note that this is a hypothetical example and the actual exploit could be more complex, depending on the specific implementation of the charging station and the MQTT protocol.
Mitigation Guidance
To mitigate this vulnerability, it is recommended to apply the vendor patch as soon as it becomes available. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These tools can potentially detect and block malicious MQTT messages, reducing the risk of exploitation. It’s also advisable to monitor network traffic for any unusual activity, particularly involving MQTT messages.