CVE-2026-44871: Arubanetworks ArubaOS RCE Vulnerability

CVE-2026-44871 Overview

CVE-2026-44871 is a command injection vulnerability in the command line interface (CLI) service of Aruba Networks AOS-8 and AOS-10 operating systems. The CLI service is reached through the Process Application Programming Interface (PAPI) protocol. An authenticated remote attacker can inject operating system commands and execute arbitrary code on the underlying host. The flaw is tracked as CWE-77: Improper Neutralization of Special Elements used in a Command and affects both ArubaOS wireless controllers and Aruba SD-WAN deployments.

Critical Impact
Authenticated attackers can execute arbitrary commands on the controller operating system, gaining full control of network infrastructure that brokers wireless and SD-WAN traffic.

Affected Products

Aruba Networks ArubaOS (AOS-8)
Aruba Networks ArubaOS (AOS-10)
Aruba Networks SD-WAN

Discovery Timeline

2026-05-12 - CVE-2026-44871 published to the National Vulnerability Database
2026-05-14 - Last updated in NVD database

Technical Details for CVE-2026-44871

Vulnerability Analysis

The vulnerability resides in the CLI service exposed through the PAPI protocol, which Aruba controllers use for internal management and inter-process communication. Input passed to CLI handlers is not properly neutralized before being incorporated into operating system command strings. An authenticated attacker with network access to the PAPI interface can craft requests that break out of the intended command context and execute arbitrary commands as the service user.

Successful exploitation compromises the confidentiality, integrity, and availability of the controller. Because Aruba controllers sit in the data path for wireless traffic and SD-WAN tunnels, post-exploitation activity can include traffic interception, lateral movement into trusted segments, and persistent backdoor placement.

Root Cause

The root cause is improper neutralization of special elements within CLI input parsed by the PAPI-exposed service. Command separators and shell metacharacters pass through the parser into command execution functions without sanitization, allowing operator chaining.

Attack Vector

The attack is delivered over the network and requires valid low-privilege credentials. No user interaction is needed. An attacker authenticates to the controller, reaches the PAPI-accessible CLI service, and submits a malformed CLI argument containing injected shell syntax. Technical details for the malformed input are not public — refer to the HPE Security Advisory hpesbnw05048en_us for vendor-supplied specifics.

Detection Methods for CVE-2026-44871

Indicators of Compromise

Unexpected child processes spawned by the ArubaOS CLI or PAPI service, such as shells or scripting interpreters.
Anomalous outbound connections originating from the controller management interface to unknown hosts.
New or modified files in administrative or configuration directories that do not correspond to legitimate change windows.
CLI audit log entries containing shell metacharacters such as ;, |, `, or $() in argument fields.

Detection Strategies

Forward ArubaOS audit logs and PAPI service logs to a centralized SIEM and alert on command arguments containing shell metacharacters.
Baseline normal PAPI traffic sources and alert when CLI commands originate from unexpected client IPs or accounts.
Monitor authentication logs for low-privilege accounts issuing CLI operations outside typical operational patterns.

Monitoring Recommendations

Enable verbose CLI command logging on all AOS-8 and AOS-10 controllers and retain logs for at least 90 days.
Restrict and monitor network reachability to the PAPI service from non-administrative network segments.
Track Aruba account usage and rotate credentials following any suspected exposure.

How to Mitigate CVE-2026-44871

Immediate Actions Required

Apply the fixed AOS-8 and AOS-10 versions identified in the HPE Aruba Networking security advisory.
Restrict PAPI protocol access to trusted management networks only, blocking it at upstream firewalls.
Rotate credentials for all Aruba administrative and operator accounts.
Audit recent CLI activity on affected controllers for signs of injection attempts.

Patch Information

HPE Aruba Networking has published fixed firmware releases for affected AOS-8 and AOS-10 trains. Refer to advisory hpesbnw05048en_us on the HPE Support Center for the complete list of fixed versions and upgrade guidance for SD-WAN deployments.

Workarounds

Enable the Enhanced PAPI Security feature on controllers where supported to require a non-default PAPI key.
Place controller management interfaces on a dedicated, access-controlled VLAN with explicit allow-lists for administrative hosts.
Disable or limit low-privilege accounts that do not require CLI access until patching is complete.

bash

# Example: restrict PAPI/management access at the controller using a control-plane ACL
# Replace 10.10.0.0/24 with your trusted management subnet
ip access-list session mgmt-restrict
  user network 10.10.0.0 255.255.255.0 any permit
  user any any deny
!
interface mgmt
  ip access-group mgmt-restrict session