CVE-2025-37122: Network Access Control XSS Vulnerability

CVE-2025-37122 Overview

CVE-2025-37122 is a Reflected Cross-Site Scripting (XSS) vulnerability in the web-based management interface of Hewlett Packard Enterprise (HPE) network access control services. An unauthenticated remote attacker can craft a malicious URL that, when clicked by an authenticated administrator, executes arbitrary JavaScript in the victim's browser session. The flaw is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation).

Critical Impact
Successful exploitation allows an attacker to execute arbitrary JavaScript in the context of the affected management interface, enabling session hijacking, credential theft, or unauthorized administrative actions against network access control infrastructure.

Affected Products

HPE network access control services (web-based management interface)
Refer to the HPE Security Bulletin for specific affected versions
Deployments exposing the management interface to untrusted networks are at greatest risk

Discovery Timeline

2025-09-17 - CVE-2025-37122 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-37122

Vulnerability Analysis

The vulnerability exists in the web-based management interface used to administer HPE network access control services. The interface reflects user-supplied input back into rendered HTML responses without adequate output encoding or input sanitization. An attacker crafts a URL containing a malicious JavaScript payload as a request parameter. When an authenticated administrator visits that URL, the payload executes in the browser under the origin of the management interface.

Because the attack requires user interaction, the exploitation path typically involves phishing links, malicious referrers, or watering-hole style delivery targeting network administrators. The scope change component of the vulnerability indicates that the injected script can affect resources beyond the immediate vulnerable component, including cookies, tokens, and API calls scoped to the administrative session.

Root Cause

The root cause is improper neutralization of input during web page generation [CWE-79]. Request parameters processed by the management interface are echoed into HTTP responses without contextual output encoding. The interface fails to apply HTML entity encoding, JavaScript string escaping, or a strict Content Security Policy that would prevent inline script execution.

Attack Vector

Exploitation requires no authentication and no privileges on the target system, but it does require user interaction. The attacker delivers a crafted URL to a victim who is authenticated to the management interface. When the victim's browser loads the response, the reflected payload runs with the privileges of the victim's active session. Attackers can steal session cookies, submit authenticated requests to the management API, exfiltrate configuration data, or pivot to compromise the underlying network access control policy.

No verified public exploitation code is available. Technical details are described in the HPE Security Bulletin.

Detection Methods for CVE-2025-37122

Indicators of Compromise

HTTP request logs containing URL parameters with <script>, javascript:, onerror=, or encoded variants such as %3Cscript%3E
Referrer headers on management interface requests originating from external or unexpected domains
Unexpected outbound requests from administrator browsers to attacker-controlled hosts following interface access
Anomalous administrative API calls issued shortly after an administrator followed an external link

Detection Strategies

Deploy a web application firewall rule set that inspects query strings and POST bodies for XSS signatures before they reach the management interface
Enable verbose HTTP access logging on the management interface and forward logs to a centralized analytics platform for pattern matching
Correlate email gateway URL telemetry with administrator browsing activity to identify targeted phishing containing crafted URLs

Monitoring Recommendations

Monitor for browser Content Security Policy violation reports if CSP headers are configured on the interface
Alert on administrative sessions performing high-privilege actions immediately after external referrer navigation
Track configuration changes to network access control policies and reconcile them against approved change tickets

How to Mitigate CVE-2025-37122

Immediate Actions Required

Apply the patch referenced in the HPE Security Bulletin as the primary remediation
Restrict access to the web-based management interface to a dedicated management VLAN or jump host
Require administrators to log out of the management interface when not actively administering the system
Enforce multi-factor authentication on administrator accounts to limit the impact of session token theft

Patch Information

HPE has published a security bulletin with fixed software versions. Administrators should consult the HPE Security Bulletin (hpesbnw04950en_us) to identify the appropriate fixed release for their deployment and schedule an upgrade.

Workarounds

Place the management interface behind a reverse proxy or WAF that enforces strict input filtering on request parameters
Configure browser isolation for administrators accessing the management console to contain script execution
Disable or block external links from being opened in administrator browsers used for network access control management
Apply a restrictive Content Security Policy at the reverse proxy layer to block inline script execution when technically feasible

bash

# Example nginx reverse proxy hardening for the management interface
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'none'" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "DENY" always;
add_header Referrer-Policy "no-referrer" always;

# Restrict access to the management interface by source IP
allow 10.10.0.0/24;   # management subnet
deny all;