CVE-2026-23810 is a vulnerability in the packet processing logic of Hewlett Packard Enterprise Aruba Networking Wireless Operating Systems versions AOS-8 and AOS-10. The flaw arises when an authenticated attacker crafts a malicious Wi-Fi frame that tricks an Access Point (AP) into classifying the frame as group-addressed traffic. Consequently, the AP re-encrypts this frame using the Group Temporal Key (GTK) associated with the victim's BSSID. This misclassification enables the attacker to inject traffic independently of the GTK, bypassing normal encryption protections. When combined with a port-stealing technique, the attacker can redirect intercepted traffic, effectively performing man-in-the-middle (MitM) attacks across different BSSID boundaries. This cross-BSSID traffic manipulation can compromise confidentiality by allowing interception and injection of wireless traffic between distinct wireless networks managed by the same AP. The vulnerability affects multiple versions of AOS-8 and AOS-10, including 8.10.0.0, 8.12.0.0, 8.13.0.0, 10.4.0.0, 10.7.0.0, and 10.8.0.0. Exploitation requires the attacker to be authenticated on the wireless network, but no user interaction is needed. The CVSS v3.1 base score is 4.3, reflecting medium severity with low impact on integrity and availability but some impact on confidentiality. No public exploits or patches have been reported yet, but the vulnerability is published and should be addressed promptly.

The primary impact of CVE-2026-23810 is the potential compromise of wireless network confidentiality through man-in-the-middle attacks. Attackers who gain authenticated access to the wireless network can inject malicious traffic and intercept communications across different BSSID boundaries, potentially exposing sensitive data transmitted over the wireless network. This can undermine trust in the wireless infrastructure, lead to data leakage, and facilitate further attacks such as credential theft or lateral movement within the network. Since the vulnerability affects widely deployed HPE Aruba wireless operating systems, organizations relying on these APs for enterprise Wi-Fi connectivity are at risk. The attack requires authentication, limiting exposure to insiders or attackers who have already breached perimeter defenses. However, the ability to cross BSSID boundaries increases the attack surface within segmented wireless environments. The lack of known exploits in the wild reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits once patches are released. Overall, the vulnerability poses a moderate risk to confidentiality and network security posture.

1. Monitor HPE Aruba Networks advisories closely and apply security patches or firmware updates as soon as they become available for affected AOS-8 and AOS-10 versions. 2. Restrict wireless network access to trusted users and devices using strong authentication mechanisms such as WPA3-Enterprise with certificate-based authentication to reduce the risk of unauthorized authenticated access. 3. Implement network segmentation and VLAN separation for different BSSIDs to limit the impact of cross-BSSID attacks. 4. Enable and monitor wireless intrusion detection/prevention systems (WIDS/WIPS) to detect anomalous frame injection or port-stealing behaviors indicative of exploitation attempts. 5. Regularly audit wireless network logs and traffic patterns for unusual activity that may signal man-in-the-middle attacks. 6. Employ strict access control policies on management interfaces and disable unnecessary services on APs to reduce attack vectors. 7. Educate network administrators about this vulnerability and the importance of timely patching and monitoring. 8. Consider deploying additional encryption layers such as VPNs for sensitive wireless communications to mitigate potential interception.