CVE-2025-28056 is a critical SQL injection vulnerability identified in the rebuild software versions 3.9.0 through 3.9.3, specifically within the /admin/admin-cli/exec component. SQL injection (CWE-89) vulnerabilities occur when untrusted input is improperly sanitized and directly incorporated into SQL queries, allowing attackers to manipulate the database queries executed by the application. In this case, the vulnerability exists in an administrative command-line interface endpoint, which likely processes commands or parameters that interact with the backend database. The CVSS 3.1 base score of 9.8 reflects the high severity of this flaw, indicating that it can be exploited remotely (AV:N - network attack vector) without any authentication (PR:N) or user interaction (UI:N). The impact on confidentiality, integrity, and availability is high (C:H/I:H/A:H), meaning an attacker can potentially extract sensitive data, modify or delete data, and disrupt service availability. Although no known exploits are currently reported in the wild, the vulnerability's characteristics make it a prime target for attackers seeking to gain unauthorized access or control over affected systems. The lack of vendor or product name in the provided data suggests that rebuild may be a niche or less widely known software, but the presence of an administrative CLI endpoint implies it is used in environments requiring elevated privileges and database interactions, which could include enterprise or specialized applications. The absence of patch links indicates that remediation may not yet be publicly available, increasing the urgency for affected organizations to monitor for updates or implement compensating controls.

For European organizations, the impact of this vulnerability can be severe. If rebuild software is used within critical infrastructure, enterprise applications, or administrative tools, exploitation could lead to unauthorized data disclosure, data tampering, or complete system compromise. This could result in breaches of personal data protected under GDPR, leading to regulatory penalties and reputational damage. Additionally, disruption of services due to availability impact could affect business continuity, especially in sectors like finance, healthcare, or government services. The remote, unauthenticated nature of the exploit means attackers can launch attacks from anywhere, increasing the risk of widespread exploitation. Organizations relying on rebuild for administrative functions should consider the risk of lateral movement within their networks if attackers gain a foothold through this vulnerability. The lack of known exploits currently provides a window for proactive defense, but the critical severity score demands immediate attention.

Given the absence of official patches, European organizations should take immediate steps to mitigate risk. First, restrict network access to the /admin/admin-cli/exec endpoint by implementing strict firewall rules or network segmentation, limiting access to trusted administrative hosts only. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting this endpoint. Conduct thorough input validation and sanitization on all user-supplied data if possible, or apply virtual patching techniques via security appliances. Monitor logs for unusual or suspicious activity related to the admin CLI, including unexpected commands or database errors. If feasible, disable or restrict the use of the vulnerable component until a patch is available. Maintain up-to-date backups and prepare incident response plans to quickly address potential exploitation. Engage with rebuild software vendors or communities to obtain timely updates or patches. Finally, conduct security awareness training for administrators to recognize and report suspicious activities.