CVE-2025-4541 is a SQL Injection vulnerability identified in LmxCMS version 1.41, specifically within the manageZt function of the c\admin\ZtAction.class.php file, which handles POST requests. The vulnerability arises from improper sanitization or validation of the 'sortid' parameter, allowing an attacker to inject malicious SQL code remotely without requiring authentication or user interaction. This flaw enables an attacker to manipulate backend database queries, potentially leading to unauthorized data access, data modification, or even complete compromise of the CMS database. The vulnerability has been publicly disclosed, and although the vendor was notified, no response or patch has been issued. The CVSS 4.0 base score is 5.3 (medium severity), reflecting that while the attack vector is network-based and requires no user interaction, it does require low privileges and has limited impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild, but public disclosure increases the risk of exploitation attempts. The lack of vendor response and patch availability heightens the urgency for organizations using LmxCMS 1.41 to implement mitigations promptly.

For European organizations using LmxCMS 1.41, this vulnerability poses a significant risk to the confidentiality and integrity of their data. Successful exploitation could lead to unauthorized disclosure of sensitive information, unauthorized modification or deletion of data, and potential disruption of CMS operations. Given that LmxCMS is a content management system, compromised systems could be used to deface websites, distribute malware, or serve as a foothold for further network intrusion. The medium CVSS score suggests the impact is moderate but should not be underestimated, especially for organizations handling personal data under GDPR regulations. Data breaches resulting from exploitation could lead to regulatory penalties, reputational damage, and operational downtime. The remote and unauthenticated nature of the attack vector increases the threat surface, making it easier for attackers to target vulnerable systems across Europe.

Since no official patch or vendor response is available, European organizations should take immediate compensating controls. First, implement web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the 'sortid' parameter in POST requests to the manageZt function. Conduct thorough input validation and sanitization on all user-supplied data at the application level, if possible, by modifying the source code or applying temporary fixes. Restrict access to the administrative interface by IP whitelisting or VPN-only access to reduce exposure. Monitor web server and database logs for suspicious activities indicative of SQL injection attempts. Regularly back up CMS data and verify backup integrity to enable recovery in case of compromise. Organizations should also consider migrating to alternative CMS platforms or updated versions once patches become available. Finally, maintain heightened alertness for any emerging exploit code or threat intelligence related to this vulnerability.