CVE-2026-73762 in AOS-CX
Summary
by MITRE • 09/02/2026
A vulnerability has been identified in the API endpoint of AOS-CX that could allow a remote actor to circumvent existing access controls. In some cases this could enable unauthorized access to management functionality that should be restricted by the configured access control policy.
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Analysis
by VulDB Data Team • 09/02/2026
The identified vulnerability resides within the application programming interface endpoints of the Aruba OS-CX operating system, presenting a critical risk to network infrastructure security. This flaw allows remote attackers to bypass established authentication and authorization mechanisms, effectively circumventing the intended access controls that govern administrative privileges. The core technical issue involves an improper implementation or validation logic within the API handler, which fails to strictly enforce role-based access control policies during request processing. Consequently, entities with lower privilege levels or unauthenticated users can exploit this gap in security enforcement to execute commands and perform actions reserved for high-privilege administrators. This type of flaw is characteristic of broken object level authorization or improper privilege management, where the system does not adequately verify that the requesting user has sufficient rights to access specific resources or functions before granting permission.
From a technical perspective, this vulnerability likely stems from insufficient validation of session tokens, role identifiers, or request parameters within the RESTful API layer. When an attacker crafts a malicious HTTP request targeting these endpoints, the system may accept and process it without verifying that the associated credentials possess the necessary administrative rights. This failure in access control logic enables unauthorized actors to interact with management functionality that is explicitly restricted by policy. Such functionality often includes critical network configuration changes, firmware updates, user account modifications, or security setting adjustments. The ability to bypass these controls means that an attacker can gain a foothold within the network management plane, potentially leading to complete compromise of the switch infrastructure and any connected devices.
The operational impact of this vulnerability is severe, as it directly undermines the integrity and availability of the managed network environment. An unauthorized actor with remote access could modify routing tables, disable security features such as ACLs or port security, or create backdoor accounts for persistent access. This not only facilitates lateral movement within the internal network but also exposes sensitive data traversing the infrastructure to interception or manipulation. Furthermore, attackers might use this elevated access to disrupt service availability by shutting down critical interfaces or altering QoS policies, leading to significant downtime and business disruption. The risk is amplified in environments where management interfaces are exposed to less trusted networks or where default credentials have not been changed, although the vulnerability itself allows exploitation regardless of credential strength if the authentication mechanism can be bypassed entirely through this logic flaw.
To mitigate this risk, immediate action should focus on applying vendor-provided patches that address the access control validation in the API endpoints. Organizations must ensure that their Aruba OS-CX devices are updated to versions where this specific authorization check has been hardened. In addition to patching, it is crucial to enforce strict network segmentation policies that restrict management plane traffic to trusted administrative subnets only. Implementing multi-factor authentication for all administrative access adds an additional layer of defense against credential-based attacks and unauthorized session hijacking. Regular auditing of API usage logs can help detect anomalous behavior indicative of exploitation attempts. Adhering to industry standards such as CWE-269, which covers Improper Privilege Management, and mapping the attack vector to MITRE ATT&CK techniques like T1078 Valid Accounts or T1548 Abuse Elevation Control Mechanism provides a structured framework for understanding and remediating similar vulnerabilities in future deployments.