CVE-2025-47629 is a high-severity vulnerability classified under CWE-502, which involves the deserialization of untrusted data in the Mario Peshev WP-CRM System, specifically affecting versions up to 3.4.1. Deserialization vulnerabilities occur when an application accepts serialized objects from untrusted sources and deserializes them without sufficient validation or sanitization. This can lead to object injection attacks, where an attacker crafts malicious serialized data that, when deserialized, can execute arbitrary code, manipulate application logic, or cause denial of service. In this case, the WP-CRM System is vulnerable to such an attack vector, allowing an authenticated user with high privileges (as indicated by the CVSS vector requiring PR:H) to remotely execute code or disrupt the system without requiring user interaction. The CVSS score of 7.2 reflects the network attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the potential for remote code execution and system compromise. The lack of available patches at the time of publication further increases the urgency for mitigation and monitoring.

For European organizations using the WP-CRM System, this vulnerability could lead to severe consequences including unauthorized access to sensitive customer relationship data, disruption of CRM services, and potential lateral movement within corporate networks. Given the critical role CRM systems play in managing customer information, sales, and support processes, exploitation could result in data breaches violating GDPR regulations, leading to legal penalties and reputational damage. The high integrity and availability impact means attackers could alter or delete CRM data or cause system outages, affecting business continuity. Organizations in sectors with stringent data protection requirements, such as finance, healthcare, and public administration, are particularly at risk. Furthermore, the requirement for high privileges to exploit the vulnerability implies that insider threats or compromised privileged accounts could be leveraged by attackers to exploit this flaw.

European organizations should immediately audit their WP-CRM System deployments to identify affected versions (up to 3.4.1). Since no patches are currently available, organizations should implement compensating controls such as restricting access to the CRM system to trusted networks and users only, enforcing strict privilege management to minimize the number of high-privilege accounts, and monitoring logs for unusual deserialization activities or anomalies. Employing Web Application Firewalls (WAFs) with rules targeting suspicious serialized payloads can help detect and block exploitation attempts. Additionally, organizations should prepare for rapid patch deployment once a fix is released by maintaining close communication with the vendor and subscribing to security advisories. Conducting internal security training to raise awareness about the risks of deserialization vulnerabilities and ensuring secure coding practices in custom integrations with the WP-CRM System can further reduce risk.