CVE-2026-44866: Arubanetworks ArubaOS RCE Vulnerability

CVE-2026-44866 Overview

CVE-2026-44866 is a command injection vulnerability affecting the web-based management interface of HPE Aruba Networking AOS-8 and AOS-10 operating systems. An authenticated remote attacker can exploit the flaw to execute arbitrary commands on the underlying operating system of affected devices. The issue is tracked under CWE-77: Improper Neutralization of Special Elements used in a Command.

Successful exploitation grants attackers code execution in the context of the device management plane. This impacts the confidentiality, integrity, and availability of network infrastructure relying on ArubaOS and SD-WAN platforms.

Critical Impact

An authenticated attacker reaching the web management interface can execute arbitrary operating system commands, compromising wireless controllers and SD-WAN gateways across the enterprise network.

Affected Products

• HPE Aruba Networking ArubaOS (AOS-8)
• HPE Aruba Networking ArubaOS (AOS-10)
• HPE Aruba Networking SD-WAN

Discovery Timeline

• 2026-05-12 - CVE-2026-44866 published to NVD
• 2026-05-15 - Last updated in NVD database

Technical Details for CVE-2026-44866

Vulnerability Analysis

The vulnerability resides in the web-based management interface of AOS-8 and AOS-10. Input passed through this interface reaches operating system command execution routines without sufficient neutralization of shell metacharacters. An authenticated attacker can inject arbitrary commands into these calls.

Because the management interface runs with elevated privileges on the device, injected commands execute in a high-privilege context. This allows attackers to read sensitive configuration data, modify routing or wireless policy, and pivot deeper into the network. The flaw is reachable over the network and requires only low-privilege authentication.

Root Cause

The root cause maps to CWE-77, improper neutralization of special elements used in an OS command. Parameters supplied to the management interface are concatenated into command strings invoked by the underlying operating system shell. Without strict allow-list validation or use of parameterized execution APIs, attacker-controlled metacharacters break out of the intended argument context.

Attack Vector

Exploitation requires network access to the AOS-8 or AOS-10 web management interface and valid authenticated credentials. After authenticating, the attacker submits a crafted HTTP request to a vulnerable endpoint with shell metacharacters embedded in a parameter. The backend executes the injected command on the device operating system, returning attacker-controlled code execution.

No public proof-of-concept exploit is available for CVE-2026-44866, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The vulnerability is described in prose by the vendor; see the HPE Security Document for technical context.

Detection Methods for CVE-2026-44866

Indicators of Compromise

• Unexpected outbound connections originating from ArubaOS controllers or SD-WAN gateways to unknown external hosts.
• Web management interface access logs showing authenticated sessions submitting requests with shell metacharacters such as ;, |, `, $(), or && in parameters.
• Creation of new administrative accounts or modification of device configuration outside of change windows.
• Unexpected processes spawned by the management web server process on the device.

Detection Strategies

• Inspect HTTP and HTTPS requests to AOS-8 and AOS-10 management endpoints for command-injection payload patterns and decode URL-encoded parameters before matching.
• Correlate authenticated administrator logins from anomalous source addresses or geographies with subsequent configuration changes.
• Alert on management-plane access from networks not authorized to reach the device administrative interface.

Monitoring Recommendations

• Forward ArubaOS and SD-WAN syslog, authentication, and configuration-change events to a central SIEM for retention and correlation.
• Monitor for failed and successful authentication anomalies against the device web interface, including brute-force and credential-stuffing patterns.
• Baseline normal management-plane traffic volume and alert on deviations that could indicate exploitation activity.

How to Mitigate CVE-2026-44866

Immediate Actions Required

• Apply the fixed AOS-8 and AOS-10 firmware versions identified in the HPE security advisory as soon as operationally feasible.
• Restrict access to the web-based management interface to a dedicated management VLAN or jump host, blocking it from user and untrusted networks.
• Rotate administrative credentials on affected devices and audit account inventories for unauthorized accounts.
• Enforce multi-factor authentication and strong password policies for all device administrative accounts.

Patch Information

HPE Aruba Networking has published remediation guidance and fixed firmware versions in the HPE Security Document. Administrators should consult the advisory to identify the specific fixed builds for their AOS-8, AOS-10, and SD-WAN deployments and schedule upgrades accordingly.

Workarounds

• Limit management-interface reachability using access control lists so that only authorized administrative subnets can reach the HTTPS management service.
• Disable the web-based management interface on devices where command-line or centralized management is sufficient.
• Place ArubaOS and SD-WAN management interfaces behind a VPN or zero-trust network access broker requiring strong authentication.

# Configuration example: restrict management access to a dedicated subnet
# Apply on ArubaOS controllers (consult vendor documentation for syntax)
configure terminal
mgmt-user webui-cacert-name <cert>
web-server
  mgmt-auth username/password
  ssl-protocol tlsv1.2 tlsv1.3
  exit
ip access-list session mgmt-acl
  user alias mgmt-subnet any permit
  any any any deny
  exit