CVE-2025-37122 is a reflected Cross-Site Scripting (XSS) vulnerability found in the web-based management interface of Hewlett Packard Enterprise's Aruba Networking ClearPass Policy Manager, specifically affecting versions 6.11.0 and 6.12.0. The vulnerability allows an unauthenticated remote attacker to inject malicious JavaScript code into the interface, which is then reflected back to the victim's browser. When a legitimate user accesses the affected interface and interacts with the crafted malicious link or input, the injected script executes in the context of the ClearPass management interface. This can lead to session hijacking, theft of sensitive information, or unauthorized actions performed on behalf of the victim user. The vulnerability is classified as medium severity with a CVSS 3.1 base score of 6.1, reflecting that it requires no privileges and low attack complexity but does require user interaction. The scope is changed (S:C), indicating that the attack could affect components beyond the vulnerable interface, potentially impacting confidentiality and integrity but not availability. No known exploits are currently reported in the wild, and no patches have been linked yet. ClearPass Policy Manager is a critical network access control solution widely used to enforce security policies and manage network access in enterprise environments, making this vulnerability significant in terms of potential impact on network security management.

For European organizations, the exploitation of this vulnerability could compromise the security of network access control systems, potentially allowing attackers to hijack administrative sessions or manipulate policy configurations indirectly through the victim's browser. This could lead to unauthorized network access, data leakage, or disruption of network security enforcement. Given that ClearPass is often deployed in large enterprises, government agencies, and critical infrastructure sectors, the impact could extend to sensitive personal data protected under GDPR, intellectual property, and critical operational networks. The reflected XSS nature means social engineering or phishing could be used to lure administrators into triggering the attack, increasing risk in environments with less stringent user awareness. Additionally, the cross-site scripting could be leveraged as a foothold for further attacks within the internal network, escalating the threat to confidentiality and integrity of network operations.

Organizations should immediately verify if they are running affected versions 6.11.0 or 6.12.0 of HPE Aruba ClearPass Policy Manager. Until an official patch is released, administrators should implement strict input validation and output encoding on the management interface if possible, to mitigate reflected XSS risks. Employing Web Application Firewalls (WAFs) with rules targeting reflected XSS patterns can provide temporary protection. Network segmentation should be enforced to limit access to the ClearPass management interface only to trusted administrative hosts and networks. Multi-factor authentication (MFA) should be enabled for all administrative access to reduce the risk of session hijacking. User training to recognize phishing attempts and suspicious links is critical to prevent exploitation via social engineering. Monitoring and logging of administrative interface access should be enhanced to detect anomalous activities promptly. Once HPE releases a patch, organizations must prioritize its deployment to fully remediate the vulnerability.