CVE-2026-23814: AOS-CX CLI Command Injection Vulnerability

CVE-2026-23814 Overview

A command injection vulnerability exists in the HPE AOS-CX operating system that affects certain CLI command parameters. This flaw allows a low-privilege authenticated remote attacker to inject malicious commands through specially crafted input, resulting in unauthorized system behavior and potential compromise of network infrastructure devices.

Critical Impact

Authenticated remote attackers can leverage this command injection vulnerability to execute arbitrary commands on affected AOS-CX network devices, potentially leading to complete system compromise, unauthorized configuration changes, and lateral movement within enterprise networks.

Affected Products

• HPE AOS-CX Network Operating System
• HPE Aruba Networking switches running AOS-CX
• Enterprise network infrastructure devices with vulnerable AOS-CX firmware

Discovery Timeline

• 2026-03-11 - CVE-2026-23814 published to NVD
• 2026-03-11 - Last updated in NVD database

Technical Details for CVE-2026-23814

Vulnerability Analysis

This vulnerability is classified as CWE-77 (Command Injection), which occurs when an application constructs a command using externally-influenced input without properly neutralizing special elements that could modify the intended command. In the context of AOS-CX CLI, the vulnerability allows authenticated users with low privileges to inject operating system commands through specific CLI command parameters.

The attack can be executed remotely over the network without requiring user interaction. A successful exploit grants the attacker the ability to execute commands with the privileges of the underlying system process, potentially enabling full compromise of the affected network device. This represents a significant threat to enterprise network infrastructure, as compromised network switches can serve as pivot points for further attacks.

Root Cause

The root cause of this vulnerability lies in improper input validation and sanitization within the AOS-CX CLI command processing logic. When certain CLI commands accept user-supplied parameters, the input is not adequately filtered for command injection metacharacters such as semicolons, pipes, backticks, or other shell escape sequences. This allows an attacker to append or embed additional system commands that get executed by the underlying operating system shell.

Attack Vector

The attack vector is network-based, requiring only low-level authentication to the AOS-CX CLI interface. An attacker with valid credentials—even those with minimal privileges—can connect to the device via SSH or console access and submit maliciously crafted commands to the vulnerable CLI interface. The injected commands bypass the intended command restrictions and execute directly on the underlying operating system, potentially with elevated privileges.

The vulnerability does not require any user interaction beyond the attacker's own actions, and the scope is unchanged, meaning the impact is limited to the vulnerable component itself. However, given that network switches are critical infrastructure components, successful exploitation could affect the confidentiality, integrity, and availability of network traffic and connected systems.

Detection Methods for CVE-2026-23814

Indicators of Compromise

• Unusual CLI command patterns containing shell metacharacters such as ;, |, &&, or backticks in device logs
• Unexpected process execution or system calls originating from CLI processes
• Anomalous network traffic from management interfaces indicating command-and-control activity
• Authentication logs showing repeated access attempts from unusual source IPs

Detection Strategies

• Implement logging and monitoring for all CLI command executions on AOS-CX devices
• Deploy network intrusion detection signatures to identify command injection patterns in SSH sessions
• Enable audit logging on management interfaces and correlate with SIEM solutions
• Monitor for privilege escalation attempts or unexpected configuration changes

Monitoring Recommendations

• Centralize logs from all AOS-CX devices to a security information and event management (SIEM) platform
• Configure alerting for CLI commands containing suspicious characters or patterns
• Establish baseline behavior for administrative access and alert on deviations
• Implement network segmentation to limit management plane access to trusted networks

How to Mitigate CVE-2026-23814

Immediate Actions Required

• Review and apply the latest security patches from HPE as documented in the security bulletin
• Restrict CLI access to trusted administrators and limit low-privilege account capabilities
• Implement network segmentation to isolate management interfaces from general network traffic
• Enable multi-factor authentication for administrative access where supported

Patch Information

HPE has released a security bulletin addressing this vulnerability. Administrators should consult the HPE Security Bulletin for detailed patch information, including affected firmware versions and upgrade instructions. It is strongly recommended to apply the vendor-provided patches as soon as possible to remediate this vulnerability.

Workarounds

• Restrict network access to AOS-CX management interfaces using access control lists (ACLs)
• Disable or limit CLI access for non-essential user accounts until patches can be applied
• Implement out-of-band management networks to reduce exposure of device management planes
• Monitor CLI activity closely and investigate any suspicious command patterns

# Example ACL configuration to restrict management access (adjust for your environment)
# Consult HPE documentation for specific AOS-CX syntax
ip access-list management-restrict
  permit tcp 10.0.0.0/8 any eq 22
  deny any any eq 22 log