CVE-2025-23367 is a security vulnerability identified in the Wildfly Server's Role Based Access Control (RBAC) provider. Wildfly is a widely used open-source Java application server that supports enterprise applications. The vulnerability arises due to improper access control in the management operations related to server suspension and resumption. Specifically, the Suspend and Resume handlers do not perform adequate authorization checks to verify if the user has the necessary privileges to execute these actions. As a result, users assigned roles with limited permissions, such as Monitor or Auditor roles—which are intended to have read-only access—can improperly suspend or resume the server. This flaw violates the principle of least privilege and undermines the RBAC enforcement mechanism. The vulnerability affects Wildfly versions from 0 up to 28.0.0.Beta1. The CVSS v3.1 base score is 6.5, indicating a medium severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) highlights that the attack can be performed remotely over the network, requires low attack complexity, and only low privileges (a user with some role) but no user interaction. The impact is limited to availability, as confidentiality and integrity are not affected. No known exploits are currently reported in the wild. This vulnerability could allow unauthorized users to disrupt service availability by suspending the server, potentially causing denial of service conditions for applications hosted on Wildfly.

For European organizations relying on Wildfly servers for critical enterprise applications, this vulnerability poses a risk of service disruption. Unauthorized suspension of the server can lead to downtime, impacting business continuity, customer access, and internal operations. Sectors such as finance, healthcare, government, and telecommunications—where Wildfly is commonly deployed—may experience operational interruptions. Although the vulnerability does not expose sensitive data or allow data manipulation, the availability impact can translate into financial losses, reputational damage, and regulatory compliance issues, especially under stringent European data protection and operational resilience frameworks like GDPR and NIS Directive. Organizations with multi-tenant environments or those providing managed services are particularly at risk, as compromised lower-privileged accounts could be leveraged to disrupt services for multiple clients. The lack of user interaction requirement and the ability to exploit remotely increase the threat's practicality. However, the need for at least some privileges (Monitor or Auditor role) limits the attack surface to insiders or users with some level of access, reducing the risk from external unauthenticated attackers.

To mitigate this vulnerability, European organizations should immediately apply any available patches or updates from the Wildfly project once released. In the absence of patches, organizations should implement strict access controls and audit policies to limit the assignment of Monitor or Auditor roles only to trusted personnel. Review and tighten RBAC configurations to ensure that users with read-only roles cannot access management operations beyond their scope. Employ network segmentation and firewall rules to restrict management interface access to trusted IP addresses and administrative networks. Enable comprehensive logging and monitoring of management operations to detect unauthorized suspend or resume commands promptly. Consider implementing additional application-layer access controls or custom authorization checks as a temporary workaround. Regularly review user roles and permissions to remove unnecessary privileges. Finally, conduct security awareness training to inform administrators and users about the risks associated with improper role assignments and the importance of adhering to the principle of least privilege.