CVE-2025-60967 is a Cross Site Scripting (XSS) vulnerability identified in the EndRun Technologies Sonoma D12 Network Time Server running firmware version 4.00 (F/W 6010-0076-000). XSS vulnerabilities occur when an application does not properly sanitize user input, allowing attackers to inject malicious scripts that execute in the context of a victim's browser. In this case, the vulnerable interface is the web management console of the Sonoma D12 device, which is used for precise network time synchronization via GPS signals. An attacker exploiting this vulnerability could craft a specially designed URL or input that, when accessed by an administrator or user, executes malicious JavaScript code. This could lead to theft of sensitive information such as session cookies, credentials, or configuration data, potentially enabling further attacks or unauthorized access. The vulnerability does not require prior authentication or complex user interaction beyond accessing the vulnerable web interface, which increases the risk of exploitation. Although no public exploits or patches are currently available, the vulnerability's publication indicates that attackers may develop exploits in the future. The Sonoma D12 is commonly deployed in environments requiring accurate timekeeping, including telecommunications, financial services, and critical infrastructure, making the impact of such an attack significant. The lack of a CVSS score necessitates an assessment based on the vulnerability's characteristics, which suggest a high severity due to the potential confidentiality impact and ease of exploitation. Organizations using these devices should monitor for updates from EndRun Technologies and implement interim security controls to mitigate risk.

The primary impact of CVE-2025-60967 is the compromise of confidentiality through the theft of sensitive information from the network time server's management interface. For European organizations, especially those in sectors relying on precise time synchronization such as telecommunications, finance, energy, and transportation, this could lead to unauthorized access to device configurations or credentials. Such access might enable attackers to manipulate time settings, disrupt synchronization, or pivot to other parts of the network, potentially affecting system integrity and availability indirectly. The vulnerability could also facilitate further attacks like session hijacking or deployment of malware within the network. Given the critical role of time servers in security protocols (e.g., logging, authentication), exploitation could undermine trust in system logs and complicate incident response. The absence of known exploits currently limits immediate risk, but the potential for future exploitation necessitates proactive measures. European organizations with exposed or poorly segmented network time servers face higher risk, particularly if remote management interfaces are accessible from untrusted networks.

1. Restrict access to the Sonoma D12 web management interface by implementing network segmentation and firewall rules to limit access only to trusted administrators and management networks. 2. Deploy Web Application Firewalls (WAFs) or intrusion prevention systems capable of detecting and blocking XSS attack patterns targeting the device's interface. 3. Monitor network traffic and device logs for unusual access patterns or suspicious input that could indicate attempted exploitation. 4. Follow EndRun Technologies' advisories closely and apply firmware updates or patches as soon as they become available. 5. Employ strong authentication mechanisms and consider multi-factor authentication for device management access to reduce the risk of unauthorized use. 6. Educate administrators about the risks of clicking on untrusted links or inputs related to device management interfaces. 7. If possible, disable web management interfaces when not in use or replace them with more secure management methods such as out-of-band management. 8. Conduct regular security assessments and penetration testing focused on network time servers and their management interfaces to identify and remediate vulnerabilities proactively.