CVE-2026-73775 in AOS-CX
Summary
by MITRE • 09/02/2026
Vulnerabilities in the API endpoint of AOS-CX could allow a remote attacker authenticated with low privileges to access sensitive information. A successful exploit allows an attacker to retrieve information which could be used to potentially gain further access to network services supported by AOS-CX.
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Analysis
by VulDB Data Team • 09/02/2026
The vulnerability identified within the Aruba OS-CX (AOS-CX) operating system represents a critical security flaw located in its application programming interface endpoints. This specific weakness allows for unauthorized data retrieval, fundamentally undermining the confidentiality guarantees expected of enterprise-grade network infrastructure software. The core issue stems from insufficient access control mechanisms implemented on certain API routes, which fail to properly enforce privilege separation between different user roles. While the vulnerability requires an initial foothold within the system, it does not demand high-level administrative credentials, thereby lowering the barrier for exploitation significantly compared to other classes of vulnerabilities that require root or admin privileges.
An attacker who has successfully authenticated with low-privilege access can leverage this flaw to extract sensitive information from the network device. The nature of the accessible data is particularly concerning because it often includes configuration details, internal state variables, or credentials that are not intended for exposure to standard user accounts. By accessing these endpoints without proper authorization checks, the attacker bypasses the logical security controls designed to segment administrative functions from general monitoring and management tasks. This breach of access control logic allows the retrieval of data that should be restricted based on the principle of least privilege, a foundational concept in cybersecurity architecture.
The operational impact of this vulnerability extends beyond simple information disclosure. The retrieved sensitive information can serve as intelligence for subsequent attacks against the network infrastructure supported by AOS-CX switches and routers. For instance, exposed configuration snippets might reveal IP addressing schemes, VLAN structures, or routing protocols that are critical to understanding the network topology. Additionally, if credentials or session tokens are inadvertently exposed through these API endpoints, they could be used to escalate privileges further or authenticate as higher-privileged users on other services running on the device. This capability transforms a low-level information leak into a potential gateway for complete system compromise and lateral movement within the enterprise environment.
From a classification perspective, this vulnerability aligns with CWE-269, which describes Improper Privilege Assignment, specifically where an actor is granted privileges that exceed their intended role or authorization level. It also relates to CWE-862, Missing Authorization, as the API endpoint fails to verify whether the authenticated user has the specific permission required for the requested action. In terms of adversary tactics, this behavior corresponds to ATT&CK technique T1078, Valid Accounts, where attackers use legitimate credentials that have been misused or obtained through other means to access resources they should not be able to reach. The exploitation path typically involves authenticating with a standard user account and then issuing crafted HTTP requests to the vulnerable API endpoints to extract data.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Aruba Networks has released software updates that patch these specific access control flaws, and administrators should prioritize applying the latest firmware versions to all affected devices in their infrastructure. Beyond updating software, network segmentation plays a crucial role in limiting the blast radius of such vulnerabilities. Ensuring that management interfaces are accessible only from trusted administrative networks reduces the attack surface available to potential intruders who might have gained low-level access through other vectors like compromised user endpoints or phishing attacks.
Furthermore, implementing strict API gateway policies and monitoring for anomalous request patterns can help detect exploitation attempts in real-time. Security operations centers should configure alerts for unusual data exfiltration volumes from management interfaces, particularly when originating from accounts with limited privileges. Regular audits of role-based access control configurations are also essential to ensure that no excessive permissions have been inadvertently assigned during routine maintenance or troubleshooting activities. By combining timely patching with robust monitoring and strict access controls, organizations can effectively neutralize the risk posed by this vulnerability and maintain the integrity of their network infrastructure.