CVE-2026-73768 in AOS-CX
Summary
by MITRE • 09/02/2026
A vulnerability exists in the command line interface of AOS-CX that may allow for improper processing of malformed input. Successful exploitation could result in the execution of arbitrary commands with root privileges.
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Analysis
by VulDB Data Team • 09/02/2026
The identified security flaw resides within the command line interface subsystem of Aruba OS-CX, a network operating system widely deployed across enterprise data center and campus infrastructure environments. This vulnerability stems from an improper validation mechanism when processing user-supplied input strings passed to specific CLI commands. The core technical deficiency involves insufficient sanitization or boundary checking of these inputs before they are processed by underlying shell interpreters or command execution routines. When a malicious actor provides specially crafted, malformed input that exploits this parsing logic error, the system fails to correctly isolate the intended command parameters from arbitrary code segments embedded within the payload. This breakdown in input validation allows for the injection of additional commands into the execution context, effectively bypassing standard access controls and permission boundaries inherent to the CLI environment.
From an operational perspective, the impact of this vulnerability is severe due to the privilege level associated with successful exploitation. The flaw enables remote or local attackers to execute arbitrary system commands with root-level privileges, which represent the highest level of authority on the operating system. This grants the attacker complete control over the affected network device, including the ability to modify configuration files, install persistent backdoors, exfiltrate sensitive network data, and pivot into other segments of the internal network infrastructure. In a typical enterprise deployment where AOS-CX manages critical routing, switching, or security functions, such unauthorized access can lead to significant service disruptions, data breaches, and compromise of the broader IT ecosystem. The ability to escalate privileges to root eliminates many traditional defense-in-depth measures that rely on user-level restrictions to contain damage from compromised accounts.
This vulnerability aligns with Common Weakness Enumeration (CWE) category CWE-78, which describes Improper Neutralization of Special Elements used in an OS Command, commonly known as OS Command Injection. The attack vector typically involves manipulating input fields or command arguments that are directly passed to operating system shells without adequate encoding or escaping of special characters such as semicolons, pipes, or ampersands. In the context of network device management interfaces, this often occurs when administrative commands accept dynamic parameters for configuration changes, status queries, or diagnostic tools. The lack of strict type checking and input filtering allows an attacker to chain multiple OS-level instructions together, executing unintended operations that were never authorized by the system administrators.
In terms of threat modeling and adversary behavior, this vulnerability facilitates techniques documented in the MITRE ATT&CK framework under Command and Scripting Interpreter abuse, specifically relating to remote command execution via injected payloads. Attackers leveraging this flaw would likely engage in initial access through compromised credentials or unauthenticated CLI sessions if exposed, followed by privilege escalation to gain root access. Subsequent actions could include defense evasion tactics such as modifying system logs to hide traces of the intrusion, and persistence mechanisms like creating new administrative accounts with elevated privileges. The exploitation of this specific weakness allows for lateral movement within the network fabric, potentially compromising other connected devices that rely on authentication or configuration data stored on the affected AOS-CX switch or router.
Mitigation strategies must prioritize immediate patching to address the underlying input validation deficiencies in the CLI parser. Administrators should apply the latest firmware updates provided by Aruba Networks as soon as they become available, ensuring that the specific patches for this command injection vulnerability are installed across all relevant devices. In environments where patching cannot be performed immediately due to operational constraints or testing requirements, network segmentation and access control lists (ACLs) should be reviewed to restrict CLI access strictly to trusted management stations and authorized IP addresses. Additionally, implementing strict role-based access controls can limit the exposure of vulnerable commands to users with lower privilege levels, although this is a compensating control rather than a fix for the root cause. Regular vulnerability scanning focused on network device interfaces and continuous monitoring of system logs for anomalous command execution patterns are also recommended to detect potential exploitation attempts early in the kill chain.