Hewlett-Packard Enterprise (HPE) has disclosed a security flaw in its Aruba Networking Private 5G Core On-Prem platform.

This vulnerability allows attackers to steal user credentials by exploiting an open redirect issue in the system’s login process.

The vulnerability is officially documented as CVE-2026-23818, exists within the platform’s graphical user interface (GUI) and functions as an open redirect vulnerability targeting the login flow.

An attacker exploits this weakness by generating a specially crafted, malicious URL to target an authenticated user.

Technical Flaw Details

The credential theft process relies heavily on user deception. When a targeted user clicks the manipulated link, the vulnerability redirects the victim to an external server controlled by the attacker.

This malicious server hosts a fraudulent login page that mimics the legitimate HPE Aruba portal. Believing they need to log in, the victim enters their credentials, which the attacker secretly records.

The fake page then silently redirects the user back to the real login screen to avoid raising suspicion.

Private 5G networks are vital for enterprise operations, handling sensitive data and connecting critical business devices.

If attackers capture valid administrative credentials, they can bypass standard security controls to access the network management console.

This unauthorized access allows threat actors to alter network configurations, disrupt critical services, or launch deeper attacks into the enterprise environment.

Network administrators must act quickly to apply the available security patches. HPE has detailed the remediation steps in security bulletin HPESBNW05032 to resolve the open redirect issue.

Organizations should also train their staff to recognize suspicious links and verify URLs before entering passwords.

Implementing multi-factor authentication can further protect accounts even if an attacker successfully captures a password.

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