CVE-2025-3893 is a high-severity SQL Injection vulnerability identified in Jan Syski's MegaBIP product, specifically affecting versions prior to 5.20. The vulnerability arises when a user with high privileges attempts to edit pages managed by MegaBIP. During this process, the user is prompted to provide a reason for the action, but the input field for this reasoning does not properly sanitize or neutralize special characters used in SQL commands. This improper input validation allows an attacker with high privileges to inject malicious SQL code, potentially manipulating the backend database. The vulnerability is classified under CWE-89, which pertains to improper neutralization of special elements in SQL commands. The CVSS 4.0 base score is 8.6, indicating a high severity level. The vector string (AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N) shows that the attack can be performed remotely without user interaction, requires high privileges, and can lead to high confidentiality, integrity, and availability impacts. Although no known exploits are currently reported in the wild, the vulnerability poses a significant risk due to the potential for unauthorized data access, data manipulation, or disruption of service. Version 5.20 of MegaBIP addresses this issue by implementing proper input sanitization and validation to prevent SQL injection attacks.

For European organizations using MegaBIP, this vulnerability could have severe consequences. Since the flaw requires a user with high privileges, insider threats or compromised privileged accounts could exploit this vulnerability to access sensitive data, alter critical information, or disrupt operations. The impact on confidentiality is high as attackers could extract sensitive database contents. Integrity is also at risk since attackers could modify or delete data, potentially affecting business processes or compliance reporting. Availability could be impacted if attackers execute commands that disrupt database functionality or application stability. Given that MegaBIP is used for page management, exploitation could lead to unauthorized content changes or defacement, damaging organizational reputation. In regulated sectors such as finance, healthcare, or government within Europe, such breaches could lead to regulatory penalties under GDPR or other data protection laws. The lack of required user interaction and remote exploitability increases the risk of automated or targeted attacks once privileged credentials are compromised.

European organizations should prioritize upgrading MegaBIP to version 5.20 or later, where the vulnerability is patched. Until the update is applied, organizations should enforce strict access controls and monitoring on accounts with high privileges to reduce the risk of exploitation. Implementing multi-factor authentication (MFA) for privileged users can help prevent unauthorized access. Regular auditing of privileged user activities and anomaly detection can identify suspicious behavior early. Additionally, applying web application firewalls (WAFs) with custom rules to detect and block SQL injection patterns in input fields related to page editing can provide a temporary protective layer. Organizations should also conduct code reviews and penetration testing focused on input validation in MegaBIP and related systems. Finally, maintaining robust database backup and recovery procedures will mitigate the impact of potential data manipulation or destruction.