CVE-2025-45585 is a vulnerability identified in the Audi UTR 2.0 Universal Traffic Recorder 2.0 device, which is used for traffic monitoring and recording. The vulnerability involves multiple stored cross-site scripting (XSS) flaws that allow an attacker to inject arbitrary web scripts or HTML code through the manipulation of the wifi_sta_ssid or wifi_ap_ssid parameters. Stored XSS vulnerabilities occur when malicious input is saved by the application and later rendered in a web interface without proper sanitization or encoding. In this case, the attacker crafts a payload that, when injected into the SSID parameters, is stored and subsequently executed in the context of the device's web management interface. This can lead to unauthorized script execution, potentially allowing attackers to hijack user sessions, deface web interfaces, steal sensitive information, or perform actions on behalf of legitimate users. The vulnerability affects the device's web interface that manages Wi-Fi settings, which is a critical component for device configuration and operation. No specific affected versions are listed, and no patches or known exploits in the wild have been reported as of the publication date. The absence of a CVSS score indicates that the vulnerability has not yet been fully assessed for severity by standard scoring systems. However, the nature of stored XSS in a networked device with a web interface suggests a significant risk vector, especially if the device is accessible within enterprise networks or exposed to the internet.

For European organizations, the exploitation of this stored XSS vulnerability in Audi UTR 2.0 devices could have several impacts. Firstly, unauthorized script execution could lead to the compromise of administrative accounts managing the traffic recorder, potentially allowing attackers to alter traffic data or disrupt monitoring capabilities. This could affect traffic management, law enforcement, or municipal operations relying on accurate traffic data. Secondly, if the device interfaces with broader network infrastructure, attackers could leverage the XSS vulnerability as a pivot point for further network intrusion or lateral movement. The confidentiality of sensitive traffic data and operational integrity could be at risk. Additionally, exploitation could lead to reputational damage for organizations responsible for traffic monitoring if data integrity is compromised or if the device is used as a vector for broader attacks. Given that these devices may be deployed in public or semi-public environments, the risk of exploitation increases if physical or network access controls are insufficient. The lack of known exploits currently reduces immediate risk but does not eliminate the potential for future attacks, especially as awareness of the vulnerability spreads.

To mitigate this vulnerability, European organizations using Audi UTR 2.0 devices should first verify if any firmware updates or patches addressing this XSS issue become available from the vendor and apply them promptly. In the absence of patches, organizations should restrict access to the device's web management interface by implementing network segmentation and firewall rules to limit access only to trusted administrative hosts. Employing strong authentication mechanisms and monitoring access logs for suspicious activity can help detect attempted exploitation. Input validation and output encoding should be enforced on the device's web interface, but since this requires vendor intervention, organizations should report the vulnerability to Audi and request remediation. Additionally, organizations should consider deploying web application firewalls (WAFs) or intrusion detection systems (IDS) capable of detecting and blocking XSS attack patterns targeting the device's management interface. Regular security assessments and penetration testing focused on networked IoT and embedded devices can help identify similar vulnerabilities proactively. Finally, educating administrators about the risks of XSS and safe management practices will reduce the likelihood of successful exploitation.