CVE-2025-23367 is an improper access control vulnerability identified in the Wildfly Server's Role Based Access Control (RBAC) provider. Wildfly is a widely used open-source Java application server. The vulnerability arises because the Suspend and Resume handlers do not perform adequate authorization checks to verify if the user has the necessary privileges before allowing these operations. Specifically, users assigned Monitor or Auditor roles, which are intended to have read-only access to management operations, can exploit this flaw to suspend or resume the server. This unauthorized ability to suspend the server can lead to denial of service by interrupting application availability. The vulnerability affects Wildfly versions up to and including 28.0.0.Beta1. The CVSS 3.1 base score is 6.5 (medium severity), with an attack vector of network (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), no impact on confidentiality or integrity (C:N/I:N), but high impact on availability (A:H). No known exploits are currently reported in the wild. The flaw is due to missing authorization checks in the Suspend and Resume handlers, which should have enforced role-based restrictions. This vulnerability can be exploited remotely by authenticated users with limited privileges, allowing them to disrupt server operations unexpectedly.

For European organizations, this vulnerability poses a risk primarily to the availability of critical applications hosted on Wildfly servers. Unauthorized suspension of the server can cause service outages, impacting business continuity and potentially violating service level agreements. Sectors relying on Wildfly for enterprise Java applications, including finance, telecommunications, government, and critical infrastructure, could experience operational disruptions. Since the flaw allows users with read-only roles to perform disruptive actions, insider threats or compromised low-privilege accounts could exploit this vulnerability. The impact is heightened in environments where RBAC is heavily relied upon for management security and where patching cycles are slow. Although confidentiality and integrity are not directly affected, the availability impact can indirectly affect data access and operational reliability. European organizations with compliance requirements for uptime and operational resilience must prioritize addressing this issue.

Organizations should immediately review and restrict RBAC role assignments to ensure that only trusted users have Monitor or Auditor roles, minimizing the risk of misuse. Until patches are available, consider disabling or restricting the Suspend and Resume management operations via configuration or firewall rules to limit access. Implement enhanced monitoring and alerting on management operations to detect unauthorized suspend or resume attempts promptly. Apply the official patches or updates from Wildfly as soon as they are released to remediate the vulnerability. Conduct thorough audits of user privileges and regularly review role assignments to prevent privilege escalation. Employ network segmentation to isolate management interfaces and restrict access to authorized personnel only. Additionally, consider implementing multi-factor authentication for management access to reduce the risk of compromised credentials being exploited.