CVE-2025-5434 is a SQL Injection vulnerability identified in Aem Solutions CMS version 1.0 and earlier. The vulnerability arises from improper sanitization of the 'ID' parameter in the /page.php file, allowing an attacker to manipulate this argument to inject malicious SQL code. This injection flaw enables remote attackers to execute arbitrary SQL commands on the backend database without requiring authentication or user interaction. The vulnerability has been publicly disclosed, and although no known exploits are currently observed in the wild, the availability of exploit details increases the risk of exploitation. The vendor has not responded to notifications regarding this issue, and no patches or mitigations have been released. The CVSS 4.0 base score is 6.9, indicating a medium severity level, reflecting the network attack vector, low complexity, no privileges or user interaction required, but limited impact on confidentiality, integrity, and availability. The vulnerability affects the core CMS product, which is typically used to manage website content and data, making it a critical component in affected organizations' web infrastructure. Exploitation could lead to unauthorized data access, data modification, or disruption of service depending on the database backend and application logic.

For European organizations using Aem Solutions CMS 1.0 or earlier, this vulnerability poses a significant risk to the confidentiality and integrity of their web application data. Successful exploitation could allow attackers to extract sensitive information such as user credentials, business data, or intellectual property stored in the CMS database. Additionally, attackers could alter or delete content, potentially damaging the organization's reputation and operational continuity. Given the CMS's role in managing public-facing websites, exploitation could also lead to website defacement or service disruption, impacting customer trust and business operations. The lack of vendor response and absence of patches exacerbate the risk, as organizations must rely on their own mitigation strategies. European organizations in sectors with strict data protection regulations (e.g., GDPR) face potential compliance violations and legal consequences if sensitive data is compromised. Furthermore, the remote and unauthenticated nature of the attack vector increases the threat landscape, as attackers can target vulnerable systems over the internet without prior access.

Since no official patches are available, European organizations should implement immediate compensating controls. First, apply strict input validation and sanitization on the 'ID' parameter at the web application firewall (WAF) or reverse proxy level to block malicious SQL payloads. Employ parameterized queries or prepared statements if source code access is possible to eliminate injection vectors. Conduct thorough code reviews and security testing to identify and remediate similar injection points. Restrict database user permissions to the minimum necessary to limit the impact of potential injection attacks. Monitor web server and database logs for unusual query patterns or repeated failed attempts targeting the 'ID' parameter. Consider isolating the CMS environment from critical internal networks to reduce lateral movement risk. If feasible, migrate to alternative CMS platforms with active vendor support or newer versions without this vulnerability. Finally, maintain up-to-date backups and incident response plans to quickly recover from potential compromise.