CVE-2025-67255 is a SQL Injection vulnerability identified in NagiosXI version 2026R1.0.1 (build 1762361101). The root cause is insufficient input validation and filtering of dashboard parameters, which allows authenticated users to inject malicious SQL queries. This vulnerability falls under CWE-89, indicating improper neutralization of special elements used in SQL commands. The CVSS v3.1 base score is 8.8, reflecting a high severity due to network attack vector (AV:N), low attack complexity (AC:L), requiring only low privileges (PR:L), and no user interaction (UI:N). The impact scope is unchanged (S:U), but the vulnerability can lead to complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). An attacker with valid credentials can exploit this flaw to extract sensitive data, modify or delete database records, or disrupt monitoring services. Although no public exploits have been reported yet, the vulnerability's characteristics make it a critical concern for organizations using NagiosXI for monitoring and alerting. The lack of patch links suggests that a fix may not yet be publicly available, underscoring the need for immediate mitigation efforts.

For European organizations, this vulnerability poses a significant threat to the security and reliability of IT infrastructure monitoring. NagiosXI is widely used in enterprise environments to monitor network devices, servers, and applications. Exploitation could lead to unauthorized data disclosure, manipulation of monitoring data, or denial of monitoring services, potentially masking other attacks or causing operational disruptions. Critical sectors such as finance, energy, healthcare, and government agencies that rely on NagiosXI for real-time monitoring could face increased risk of data breaches or service outages. The ability for low-privileged authenticated users to exploit this vulnerability increases the attack surface, especially in environments with many users or weak access controls. The absence of known exploits in the wild provides a window for proactive defense, but the high CVSS score indicates that once exploited, the consequences could be severe.

1. Immediately review and restrict access to NagiosXI dashboards to trusted and necessary users only, minimizing the number of authenticated users with dashboard access. 2. Implement strict input validation and sanitization at the application layer where possible, including web application firewalls (WAFs) configured to detect and block SQL injection attempts targeting NagiosXI. 3. Monitor database logs and application logs for unusual or suspicious SQL queries that could indicate exploitation attempts. 4. Segregate the NagiosXI monitoring environment from critical production networks to limit lateral movement in case of compromise. 5. Apply vendor patches or updates as soon as they become available; maintain close communication with Nagios support channels for timely security advisories. 6. Conduct internal penetration testing focused on NagiosXI to identify and remediate any other potential injection points. 7. Educate users with dashboard access about the risks and enforce strong authentication mechanisms, such as multi-factor authentication, to reduce the risk of credential compromise.