CVE-2025-15143 is a SQL injection vulnerability identified in EyouCMS, a content management system, affecting all versions up to 1.7.6. The vulnerability resides in an unspecified function within the /application/admin/logic/FilemanagerLogic.php file, part of the Backend Template Management component. The issue arises from improper sanitization or validation of the 'content' argument, allowing an attacker to inject malicious SQL queries remotely. The attack vector is network-based (AV:N), requires low attack complexity (AC:L), no user interaction (UI:N), but requires high privileges (PR:H), indicating that the attacker must have authenticated access with elevated rights to exploit the flaw. The impact on confidentiality, integrity, and availability is low individually but combined can lead to significant data compromise or service disruption. The vendor was notified but has not responded or issued patches, and public exploit code is available, increasing the risk of exploitation. No known exploits in the wild have been reported yet, but the public availability of exploits necessitates immediate attention. The vulnerability does not require social engineering but does require authenticated access, which limits the attack surface but does not eliminate risk, especially in environments with weak access controls or compromised credentials.

For European organizations, this vulnerability poses a risk primarily to those using EyouCMS versions up to 1.7.6, particularly in sectors relying on this CMS for backend template management. Successful exploitation could lead to unauthorized data access, modification, or deletion, impacting data confidentiality and integrity. Availability could also be affected if injected queries disrupt database operations. Given the requirement for high privileges, the threat is more significant in environments with inadequate internal access controls or where credential compromise is possible. The public release of exploit code increases the likelihood of targeted attacks or opportunistic exploitation, potentially leading to data breaches or defacement. Organizations handling sensitive or regulated data (e.g., GDPR-protected personal data) could face compliance violations and reputational damage. The lack of vendor response and patches increases the window of exposure, necessitating proactive mitigation. The impact is heightened in sectors with critical web infrastructure or where EyouCMS is internet-facing, as remote exploitation is possible.

1. Immediately restrict access to the EyouCMS admin backend by IP whitelisting or VPN-only access to reduce exposure. 2. Enforce strong authentication and privilege management to ensure only trusted users have high-level access. 3. Monitor database logs and web application logs for unusual queries or injection patterns related to the 'content' parameter. 4. Employ web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the vulnerable endpoint. 5. Isolate the CMS backend from other critical systems to limit lateral movement in case of compromise. 6. Regularly audit user accounts and revoke unnecessary privileges to minimize the risk of privilege abuse. 7. Prepare for patch deployment by tracking vendor updates or community patches; consider temporary code review or manual sanitization of inputs if feasible. 8. Conduct penetration testing focused on SQL injection vectors to identify any additional weaknesses. 9. Educate administrators about the risk and signs of exploitation to improve detection and response. 10. Implement network segmentation to protect sensitive data repositories from compromised CMS components.