CVE-2025-23367 is a medium-severity vulnerability affecting the Wildfly Server Role Based Access Control (RBAC) provider. The flaw arises from improper access control in the management operations of the Wildfly server, specifically in the Suspend and Resume handlers. Normally, users assigned the Monitor or Auditor roles are granted read-only permissions and should not be able to perform disruptive actions such as suspending or resuming the server. However, due to missing authorization checks in these handlers, users with these limited roles can suspend or resume the server without possessing the required privileges. This vulnerability stems from the Suspend and Resume handlers failing to validate whether the current user has the appropriate permissions before executing these actions. The affected versions include Wildfly versions up to 28.0.0.Beta1. The CVSS v3.1 base score is 6.5, reflecting a medium severity level, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring low 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). This means an attacker with low privileges and network access can disrupt server availability by suspending it, potentially causing denial of service. No known exploits are currently reported in the wild. The vulnerability was published on January 30, 2025, and is recognized by CISA. The root cause is a missing authorization check in critical management operations, which violates the principle of least privilege and breaks expected role-based access control enforcement.

For European organizations using Wildfly servers, this vulnerability poses a risk of denial of service through unauthorized suspension of server operations by users with limited monitoring roles. This can disrupt business-critical applications and services hosted on Wildfly, leading to operational downtime and potential financial losses. Since the vulnerability does not impact confidentiality or integrity, data breaches are unlikely directly from this flaw. However, availability disruptions can affect service level agreements and damage organizational reputation. Organizations relying on Wildfly for enterprise Java applications, particularly in sectors such as finance, government, healthcare, and telecommunications, may face increased risk if internal users or attackers gain low-privilege access to management interfaces. The fact that no user interaction is required and the attack can be performed remotely over the network increases the threat level. Additionally, improper access control may be leveraged as part of a larger attack chain to cause cascading failures or to mask other malicious activities by suspending monitoring services.

To mitigate this vulnerability, organizations should immediately apply any available patches or updates from the Wildfly project or their vendor once released. In the absence of patches, administrators should restrict network access to the management interfaces of Wildfly servers to trusted personnel only, using network segmentation, firewalls, and VPNs. Review and tighten role assignments to ensure that only fully trusted users have Monitor or Auditor roles, minimizing the number of users with these privileges. Implement strict logging and monitoring of management operations to detect any unauthorized suspend or resume actions promptly. Consider deploying compensating controls such as multi-factor authentication for management access and employing runtime application self-protection (RASP) tools that can detect anomalous management commands. Additionally, conduct regular audits of RBAC configurations and test management operations to verify that authorization checks are enforced correctly. Finally, educate administrators and users about the risks of improper access control and the importance of adhering to the principle of least privilege.