CVE-2026-23810 is a vulnerability in the packet processing logic of Hewlett Packard Enterprise's 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 causes an Access Point (AP) to misclassify the frame as group-addressed traffic. Consequently, the AP re-encrypts the 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 normally required, bypassing some encryption protections. When combined with a port-stealing technique, the attacker can redirect intercepted traffic across different BSSID boundaries, effectively enabling man-in-the-middle (MitM) attacks between wireless clients and APs. The vulnerability affects multiple versions of AOS-8 (8.10.0.0, 8.12.0.0, 8.13.0.0) and AOS-10 (10.4.0.0, 10.7.0.0, 10.8.0.0). Exploitation requires the attacker to be authenticated on the wireless network but does not require user interaction. The vulnerability is categorized under CWE-300 (Channel Accessible by Non-Endpoint), indicating improper handling of communication channels. The CVSS v3.1 base score is 4.3, reflecting a medium severity with low confidentiality impact and no integrity or availability impact. No patches are currently linked, and no known exploits have been reported in the wild as of the publication date. This vulnerability could be leveraged to facilitate MitM attacks, potentially exposing sensitive data transmitted over the wireless network.

The primary impact of CVE-2026-23810 is the potential for an authenticated attacker to perform man-in-the-middle attacks by injecting and redirecting wireless traffic across BSSID boundaries. This could lead to unauthorized interception of sensitive information transmitted over the wireless network, compromising confidentiality. However, the vulnerability does not directly affect data integrity or availability. The requirement for attacker authentication limits the attack surface to users who already have some level of network access, reducing the risk from external unauthenticated attackers. Organizations relying on HPE Aruba wireless infrastructure, especially those with multiple BSSIDs and complex wireless segmentation, may face increased risk of lateral movement and data interception within their wireless environments. This could be particularly damaging in environments handling sensitive or regulated data, such as financial, healthcare, or government sectors. The absence of known exploits in the wild suggests limited immediate threat, but the vulnerability could be targeted in the future once exploit techniques are developed.

1. Monitor HPE Aruba Networks advisories closely for official patches addressing CVE-2026-23810 and apply them promptly once available. 2. Restrict wireless network access to trusted and authenticated users only, minimizing the number of potential attackers with network access. 3. Implement strict wireless network segmentation and isolate critical BSSIDs to limit the scope of potential traffic redirection and MitM attacks. 4. Deploy wireless intrusion detection and prevention systems (WIDS/WIPS) capable of detecting anomalous frame injection or unusual traffic patterns indicative of exploitation attempts. 5. Enforce strong authentication mechanisms such as WPA3-Enterprise with robust EAP methods to reduce the risk of unauthorized authentication. 6. Regularly audit wireless network configurations and logs for signs of port stealing or unexpected traffic redirection. 7. Educate network administrators on this vulnerability and encourage vigilance for suspicious wireless behavior. 8. Consider additional encryption at higher layers (e.g., TLS) for sensitive applications to mitigate risks from wireless layer attacks.