CVE-2025-7101 is a code injection vulnerability identified in BoyunCMS versions up to 1.4.20, specifically within the /install/install_ok.php file in the Configuration File Handler component. The vulnerability arises from improper handling of the 'db_pass' argument, which can be manipulated remotely by an unauthenticated attacker to inject and execute arbitrary code on the affected system. This flaw allows attackers to execute commands or inject malicious scripts without requiring user interaction or prior authentication, leveraging the network accessibility of the installation script. The vulnerability has been publicly disclosed, although no known exploits are currently reported in the wild. The CVSS 4.0 base score is 5.3, indicating a medium severity level. The attack vector is network-based with low attack complexity, no privileges required, and no user interaction needed. However, the impact on confidentiality, integrity, and availability is limited to low, which moderates the overall severity. The vulnerability's presence in the installation script suggests that exploitation might require the installation process to be accessible or incomplete, but if accessible, it poses a significant risk of unauthorized code execution, potentially leading to system compromise or further lateral movement within the network.

For European organizations using BoyunCMS, this vulnerability presents a tangible risk of unauthorized remote code execution, which could lead to data breaches, defacement, or full system compromise. Given that BoyunCMS is a content management system, exploitation could allow attackers to manipulate website content, steal sensitive data, or deploy malware. The medium severity score reflects a moderate risk, but the ease of remote exploitation without authentication increases the threat level. Organizations in Europe that rely on BoyunCMS for their web presence or internal portals may face operational disruptions and reputational damage if exploited. Additionally, regulatory frameworks such as GDPR impose strict data protection requirements, and a breach resulting from this vulnerability could lead to significant legal and financial consequences. The impact is heightened for organizations that have publicly accessible installation endpoints or have not secured or removed installation scripts post-deployment.

To mitigate this vulnerability, European organizations should immediately verify if BoyunCMS versions up to 1.4.20 are in use and restrict access to the /install/install_ok.php script by removing or disabling the installation directory after setup completion. Network-level controls such as firewall rules should block external access to installation scripts. If possible, upgrade to a patched version of BoyunCMS once available. In the absence of an official patch, organizations should implement web application firewall (WAF) rules to detect and block suspicious requests targeting the 'db_pass' parameter. Regularly audit web server logs for unusual activity related to installation scripts. Employ strict input validation and sanitization on all parameters, especially those related to configuration files. Conduct penetration testing focusing on installation endpoints to identify potential exploitation paths. Finally, ensure robust backup and incident response plans are in place to quickly recover from any compromise.