CVE-2025-52358 is a cross-site scripting (XSS) vulnerability identified in the Vivaldi United Group iCONTROL+ Server, specifically affecting firmware version 4.7.8.0.eden and Logic version 5.32 and below. This vulnerability arises due to insufficient input validation or sanitization of user-supplied data within the 'error' or 'edit-menu-item' parameters. An attacker can exploit this flaw by injecting malicious JavaScript payloads into these parameters, which are then executed in the context of the victim's browser session when the affected web interface renders these parameters. This type of vulnerability can lead to session hijacking, credential theft, unauthorized actions on behalf of the user, or delivery of further malware. The vulnerability does not require authentication or complex exploitation techniques, making it accessible to remote attackers who can lure victims into visiting crafted URLs or interacting with manipulated interface elements. Although no known exploits are currently reported in the wild, the presence of this vulnerability in a server management product used for controlling or monitoring systems indicates a significant risk if left unmitigated. The lack of a CVSS score suggests that the vulnerability is newly disclosed and has not yet undergone formal severity assessment.

For European organizations, the impact of this XSS vulnerability can be substantial, especially for those utilizing Vivaldi United Group iCONTROL+ Server in their operational technology or network management environments. Successful exploitation could allow attackers to execute arbitrary scripts in the browsers of administrators or operators, potentially leading to unauthorized access to sensitive control panels, leakage of confidential configuration data, or manipulation of system settings. This could disrupt critical infrastructure management, degrade operational integrity, or facilitate further attacks such as lateral movement within the network. Given the increasing reliance on web-based management consoles in industrial and enterprise environments across Europe, the vulnerability poses a risk to confidentiality, integrity, and availability of systems managed via the affected software. Additionally, exploitation could undermine trust in system monitoring and control, leading to operational downtime or compliance issues under European data protection regulations.

To mitigate this vulnerability, European organizations should immediately review and restrict access to the iCONTROL+ Server management interfaces, ideally limiting them to trusted internal networks and VPNs. Implementing strict input validation and output encoding on the 'error' and 'edit-menu-item' parameters is critical; organizations should work with Vivaldi United Group to obtain patches or updates addressing this issue as soon as they become available. In the interim, deploying web application firewalls (WAFs) with custom rules to detect and block suspicious script injection attempts targeting these parameters can reduce risk. Security teams should also educate users and administrators about the risks of clicking on untrusted links or interacting with unexpected interface elements. Regular monitoring of server logs for anomalous parameter values and unusual access patterns can help detect attempted exploitation. Finally, organizations should maintain up-to-date backups and incident response plans to quickly recover from potential compromises.