CVE-2025-4992 is a high-severity stored Cross-site Scripting (XSS) vulnerability identified in Dassault Systèmes' Service Process Engineer product, specifically affecting the Service Items Management component. The vulnerability exists in versions from Release 3DEXPERIENCE R2024x Golden through Release 3DEXPERIENCE R2025x Golden. Stored XSS occurs when malicious script code is injected and permanently stored on the target server, later executed in the browsers of users who access the affected content. In this case, improper neutralization of input during web page generation (CWE-79) allows an attacker with at least limited privileges (PR:L) and requiring user interaction (UI:R) to inject arbitrary JavaScript code. The CVSS v3.1 base score is 8.7, indicating a high impact on confidentiality and integrity, with no impact on availability. The vulnerability scope is changed (S:C), meaning the attack can affect resources beyond the initially compromised component. Exploitation requires network access (AV:N) and low attack complexity (AC:L). Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the potential for session hijacking, credential theft, or unauthorized actions performed in the context of the victim user's session. The vulnerability affects a critical enterprise software suite used for process engineering and service management, which often contains sensitive operational data and workflows. The lack of available patches at the time of publication necessitates immediate attention to mitigation strategies.

For European organizations, the impact of CVE-2025-4992 can be substantial. Service Process Engineer is used in industries requiring precise process management and engineering workflows, such as manufacturing, aerospace, automotive, and industrial design sectors prevalent in Europe. Exploitation of this stored XSS vulnerability could lead to unauthorized disclosure of sensitive process data, manipulation of service items, and potential compromise of user accounts through session hijacking or credential theft. This can disrupt business operations, damage intellectual property confidentiality, and erode trust in enterprise systems. Given the scope change (S:C), attackers might leverage this vulnerability to pivot and access other components or data within the 3DEXPERIENCE platform, amplifying the impact. The requirement for user interaction means phishing or social engineering could be used to trigger the exploit, increasing the risk in environments with less stringent user awareness. The high confidentiality and integrity impact ratings underscore the threat to data protection compliance under regulations such as GDPR, making this vulnerability particularly critical for European entities.

1. Immediate mitigation should include restricting access to the Service Items Management interface to trusted users only and enforcing strict role-based access controls to minimize exposure. 2. Implement robust input validation and output encoding at the application layer, especially for user-supplied data rendered in web pages, to prevent injection of malicious scripts. 3. Employ Content Security Policy (CSP) headers to reduce the risk of script execution from untrusted sources. 4. Increase user awareness and training to recognize and avoid phishing attempts that could trigger the stored XSS payload. 5. Monitor logs and network traffic for unusual activity indicative of exploitation attempts, such as anomalous script execution or unexpected user actions. 6. Coordinate with Dassault Systèmes for timely patch deployment once available, and test patches in a controlled environment before production rollout. 7. Consider deploying Web Application Firewalls (WAF) with custom rules to detect and block XSS attack patterns targeting the affected components. 8. Regularly audit and sanitize existing stored data in the Service Items Management system to remove any malicious scripts that may have been injected prior to mitigation.