CVE-2026-75624 in App Connect Enterprise
Summary
by MITRE • 09/11/2026
IBM App Connect Enterprise 13.0.1.0 through 13.0.8.1, and 12.0.1.0 through 12.0.12.27 could allow a remote authenticated attacker to bypass security restrictions due to incorrect authorization.
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Analysis
by VulDB Data Team • 09/11/2026
The vulnerability identified in IBM App Connect Enterprise versions ranging from 13.0.1.0 through 13.0.8.1 and 12.0.1.0 through 12.0.12.27 represents a critical flaw in the application's access control mechanisms. This issue stems from an incorrect authorization logic within the software, which fails to properly validate user permissions before granting access to specific resources or functions. The core technical deficiency lies in the server-side validation process, where the system does not adequately verify that the authenticated user possesses the requisite privileges for the requested action. Consequently, a remote attacker who has successfully obtained valid credentials can exploit this gap to bypass intended security restrictions. This type of flaw is commonly categorized under CWE-269, which denotes Improper Privilege Control, indicating that the software allows an actor to elevate their privileges or access resources beyond what was explicitly granted by the system administrator.
The operational impact of this vulnerability is significant for organizations relying on IBM App Connect Enterprise for integration workflows and data mediation. Since the attack vector requires remote authentication, it targets users who have legitimate accounts within the environment but may not necessarily hold administrative roles. An attacker leveraging this flaw could potentially access sensitive configuration files, view or modify integration flows, or interact with backend systems that are normally restricted to higher-privileged users. This undermines the principle of least privilege and compromises the integrity of the enterprise service bus architecture. In a typical deployment where App Connect Enterprise acts as a central hub for connecting disparate applications, such unauthorized access could lead to data leakage, manipulation of business logic, or further lateral movement within the network if connected systems have weaker security postures.
From an offensive security perspective, this vulnerability aligns with MITRE ATT&CK technique T1078, specifically Valid Accounts, as it relies on existing credentials rather than exploiting a zero-day authentication bypass. The exploitation path typically involves identifying users with lower-level access and attempting to perform actions reserved for administrators or other restricted roles. This behavior is consistent with privilege escalation attempts where the attacker seeks to expand their foothold within the compromised environment. Defenders should recognize that even authenticated users pose a risk if proper role-based access control policies are not strictly enforced at the application level, highlighting the importance of rigorous testing during development and deployment phases.
Mitigation strategies for this vulnerability primarily involve applying the official patches provided by IBM to update App Connect Enterprise to versions beyond 13.0.8.1 or 12.0.12.27. Organizations should prioritize these updates in their patch management cycles, especially if the affected systems are exposed to untrusted networks or handle sensitive data. In addition to software remediation, it is advisable to review and tighten access control policies within the application. Implementing strict role-based access controls ensures that users only have permissions necessary for their specific job functions. Regular audits of user accounts and activity logs can help detect any anomalous behavior indicative of privilege escalation attempts. Furthermore, deploying network segmentation and firewalls can limit exposure by restricting direct remote access to App Connect Enterprise instances, thereby reducing the attack surface available to potential adversaries seeking to exploit this authorization flaw.