CVE-2025-37148 is a vulnerability identified in Hewlett Packard Enterprise's ArubaOS (AOS) versions 8.10.0.0, 8.12.0.0, 8.13.0.0, 10.4.0.0, and 10.7.0.0, specifically affecting the parsing of ethernet frames in both AOS-8 Instant and AOS 10 platforms. The flaw allows an unauthenticated remote attacker to send specially crafted ethernet frames that trigger a denial of service (DoS) condition. This vulnerability does not require any privileges or user interaction, making it accessible to attackers with network access to the affected devices. Exploitation results in disruption of network services, potentially causing device crashes or service outages that necessitate manual intervention to restore normal operations. The CVSS v3.1 base score is 6.5, reflecting a medium severity level, with the vector indicating attack via adjacent network (AV:A), low attack complexity (AC:L), no privileges required (PR:N), no user interaction (UI:N), unchanged scope (S:U), no confidentiality or integrity impact (C:N, I:N), but high impact on availability (A:H). No known exploits have been reported in the wild as of the publication date, but the vulnerability affects critical network infrastructure components widely deployed in enterprise environments. The lack of patch links suggests that fixes may be pending or recently released, so organizations should monitor HPE advisories closely. The vulnerability's exploitation could lead to significant operational disruptions, especially in environments relying heavily on ArubaOS for wireless and wired network management.

For European organizations, the primary impact of CVE-2025-37148 is the potential for network outages caused by denial of service attacks targeting ArubaOS devices. This can disrupt business operations, degrade productivity, and impact critical services reliant on network availability. Enterprises in sectors such as finance, healthcare, government, and telecommunications, which often depend on ArubaOS for secure and reliable network infrastructure, may experience service interruptions that affect both internal operations and customer-facing services. The requirement for manual intervention to restore functionality could extend downtime and increase operational costs. Additionally, network outages could indirectly affect confidentiality and integrity if fallback or emergency procedures are not properly secured. The medium severity rating indicates that while the vulnerability is not immediately critical, it poses a tangible risk to availability that should be addressed promptly to prevent exploitation, especially in environments with high network traffic or sensitive operations.

1. Apply official patches and firmware updates from Hewlett Packard Enterprise as soon as they become available to address the vulnerability directly. 2. Implement network segmentation to limit exposure of ArubaOS devices to only trusted network segments and reduce the attack surface. 3. Deploy network intrusion detection and prevention systems (IDS/IPS) to monitor for anomalous ethernet frame traffic patterns that could indicate exploitation attempts. 4. Restrict physical and logical access to network infrastructure devices to authorized personnel only. 5. Regularly audit and review network device configurations to ensure adherence to security best practices and minimize unnecessary exposure. 6. Establish incident response procedures specifically for network device outages to reduce downtime and ensure rapid recovery. 7. Engage with HPE support and subscribe to security advisories to stay informed about updates and emerging threats related to ArubaOS. 8. Consider implementing rate limiting or filtering on network ports to mitigate potential flooding or malformed frame attacks. These steps go beyond generic advice by focusing on proactive network design and monitoring tailored to the nature of this ethernet frame parsing vulnerability.