CVE-2025-12519 is a vulnerability classified under CWE-862 (Missing Authorization) found in Centreon Infra Monitoring software, specifically within the Administration parameters API endpoint modules. The issue arises because certain API functions lack proper access control enforcement, allowing unauthenticated remote attackers to invoke functionality that should be restricted. This improper authorization enables attackers to retrieve sensitive configuration information such as downtime schedules and acknowledgement settings, which are critical for understanding the monitored environment's operational status. The vulnerability affects multiple versions: from 24.04.0 before 24.04.19, 24.10.0 before 24.10.15, and 25.10.0 before 25.10.2. The CVSS v3.1 base score is 5.3, indicating medium severity, with an attack vector of network (AV:N), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), and impact limited to confidentiality (C:L), with no integrity or availability impact. The vulnerability does not require authentication, making it easier to exploit remotely. Although no public exploits are currently known, the exposure of monitoring configurations can facilitate further attacks by revealing system maintenance windows or acknowledgement states that could be manipulated or avoided by attackers. Centreon Infra Monitoring is widely used in enterprise environments for IT infrastructure monitoring, making this vulnerability relevant for organizations relying on this tool for operational awareness and incident response.

For European organizations, the primary impact of CVE-2025-12519 is the unauthorized disclosure of sensitive monitoring configuration data. This information can reveal planned downtimes, acknowledgement statuses, or other operational parameters that attackers could leverage to time attacks during maintenance windows or avoid detection. While the vulnerability does not directly affect system integrity or availability, the confidentiality breach can undermine security posture and incident response effectiveness. Organizations in sectors with critical infrastructure, such as energy, finance, telecommunications, and government, may face increased risk if attackers use this information to plan disruptive activities. Additionally, regulatory compliance frameworks like GDPR emphasize protecting operational data, so unauthorized disclosure could lead to compliance issues or reputational damage. The ease of remote exploitation without authentication increases the threat level, especially for organizations exposing Centreon APIs to untrusted networks or lacking proper network segmentation and access controls.

To mitigate CVE-2025-12519, European organizations should: 1) Apply official patches or updates from Centreon as soon as they become available for affected versions. 2) Restrict access to the Administration parameters API endpoints by implementing network-level controls such as firewalls, VPNs, or IP whitelisting to limit exposure to trusted users and systems only. 3) Employ strong authentication and authorization mechanisms around the monitoring infrastructure, ensuring that API endpoints enforce proper ACLs. 4) Monitor API access logs for unusual or unauthorized requests targeting administration endpoints to detect potential exploitation attempts early. 5) Conduct regular security assessments and penetration testing focused on monitoring tools to identify and remediate similar authorization weaknesses. 6) Segment monitoring infrastructure networks from general user networks to reduce attack surface. 7) Educate IT and security teams about the risks of information disclosure through monitoring tools and the importance of securing these systems.