CVE-2026-2749 is a critical security vulnerability identified in the Centreon Open Tickets module on the Central Server running Linux. Centreon is a popular IT infrastructure monitoring solution used globally to track and manage network and system health. This vulnerability affects all versions prior to 25.10.3, 24.10.8, and 24.04.7, allowing an attacker with low privileges (PR:L) to remotely exploit the system without requiring user interaction (UI:N). The vulnerability has a CVSS v3.1 score of 9.9, reflecting its critical nature with network attack vector (AV:N), low attack complexity (AC:L), and impacts on confidentiality, integrity, and availability (C:H/I:H/A:H). The scope is changed (S:C), meaning the vulnerability can affect resources beyond the initially vulnerable component. Although no public exploits are currently known, the ease of exploitation and the severity of impact make this a high-priority issue. The vulnerability likely involves improper access control or input validation in the Open Tickets module, enabling remote code execution or privilege escalation. Centreon’s role in monitoring critical IT infrastructure means exploitation could lead to unauthorized data access, manipulation of monitoring data, disruption of alerting mechanisms, and potential lateral movement within networks. The vulnerability was reserved and published in February 2026, and no patches or exploit details are currently provided, indicating organizations must remain vigilant and prepare for imminent updates.

The impact of CVE-2026-2749 is severe for organizations relying on Centreon for IT infrastructure monitoring. Successful exploitation can lead to full compromise of the monitoring server, allowing attackers to access sensitive operational data, manipulate monitoring results, and disrupt alerting systems. This can delay detection of other attacks or system failures, increasing overall organizational risk. The compromise of monitoring infrastructure can also serve as a pivot point for attackers to move laterally into other critical systems, potentially leading to data breaches, service outages, or ransomware deployment. Given Centreon’s widespread use in enterprise, government, and critical infrastructure sectors, the vulnerability poses a significant threat to operational continuity and data confidentiality worldwide. The lack of required user interaction and low attack complexity mean that automated attacks or wormable exploits could emerge rapidly, amplifying the threat landscape.

Organizations should immediately inventory their Centreon deployments to identify affected versions and restrict network access to Centreon Central Servers to trusted management networks only. Implement strict role-based access controls to limit privileges on Centreon systems, minimizing the risk of exploitation by low-privilege users. Monitor logs and network traffic for unusual activity related to Centreon services, including unexpected remote connections or anomalous ticketing behavior. Prepare to apply vendor patches as soon as they become available, and test updates in controlled environments before deployment. Consider deploying network-level protections such as web application firewalls (WAFs) to detect and block exploit attempts targeting Centreon. Additionally, conduct regular security assessments and penetration tests focused on monitoring infrastructure to identify potential weaknesses. Maintain up-to-date backups of Centreon configurations and data to enable rapid recovery in case of compromise.