CVE-2025-37165 identifies a vulnerability in the router mode configuration of Hewlett Packard Enterprise (HPE) Instant On Access Points, specifically version 3.0.0.0. The vulnerability arises because certain network configuration details are exposed to unintended network interfaces, allowing an unauthenticated attacker to glean sensitive internal network information by inspecting impacted packets. This exposure does not require any privileges or user interaction, and the attacker can operate remotely over the network. The vulnerability impacts confidentiality by leaking internal network topology or configuration data, which could be leveraged to plan subsequent attacks such as targeted intrusions or lateral movement. The flaw does not affect integrity or availability, meaning the attacker cannot modify data or disrupt services directly through this vulnerability. The CVSS v3.1 base score is 7.5, reflecting a high severity due to the ease of exploitation (network accessible, no privileges required) and the significant confidentiality impact. No known exploits have been reported in the wild, and no official patches or mitigations have been published at the time of disclosure. The vulnerability is specific to the router mode operation of HPE Instant On Access Points, a product line commonly used in small to medium business environments and branch offices for wireless networking. The exposure of internal network configuration details could include IP addressing schemes, routing information, or other sensitive metadata that could aid attackers in reconnaissance and subsequent exploitation.

For European organizations, the exposure of internal network configuration details can significantly increase the risk of targeted cyberattacks. Attackers gaining knowledge of internal network topology can more effectively plan lateral movement, privilege escalation, or targeted phishing campaigns. This is particularly critical for organizations in sectors such as finance, healthcare, government, and critical infrastructure, where network confidentiality is paramount. The vulnerability does not directly allow service disruption or data modification, but the intelligence gained can facilitate more damaging attacks. Small and medium enterprises using HPE Instant On products in router mode may be especially vulnerable due to potentially less mature network segmentation and monitoring controls. Additionally, organizations with remote or branch offices relying on these access points could face increased risk of network reconnaissance by external attackers. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers often develop exploits after public disclosure. The absence of patches means organizations must rely on compensating controls to mitigate exposure.

1. Immediately restrict network access to HPE Instant On Access Points management and router interfaces to trusted internal networks only, using VLAN segmentation and firewall rules. 2. Implement strict network segmentation to isolate wireless access points from sensitive internal network segments, minimizing exposure if configuration details leak. 3. Monitor network traffic for unusual packet inspection or reconnaissance activities, employing intrusion detection/prevention systems (IDS/IPS) tuned to detect anomalous scanning or sniffing behavior. 4. Disable router mode on HPE Instant On devices if not strictly required, or consider alternative configurations that limit exposure of network configuration details. 5. Maintain up-to-date inventory of HPE Instant On devices and their firmware versions to identify and prioritize vulnerable units. 6. Engage with HPE support channels to obtain any forthcoming patches or official mitigations as soon as they become available. 7. Educate network administrators about the vulnerability and encourage regular review of device configurations to avoid unintended exposure. 8. Consider deploying network encryption and secure management protocols to reduce the risk of packet inspection by unauthorized actors.