CVE-2026-23809 MAC Address Spoofing leads to Inter-BSSID Isolation Bypass Resulting in Traffic Redirection
Attackers can bypass inter-BSSID isolation via MAC spoofing to redirect traffic, enabling eavesdropping or denial of service on HPE Aruba wireless networks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23809?
CVE-2026-23809 is a medium-severity vulnerability in Arubanetworks Arubaos, published on 4 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A technique has been identified that adapts a known port-stealing method to Wi-Fi environments that use multiple BSSIDs. By leveraging the relationship between BSSIDs and their associated virtual ports, an attacker could potentially bypass inter-BSSID isolation controls. Successful exploitation may enable an attacker to redirect and intercept the victim's network traffic, potentially resulting in eavesdropping, session hijacking, or denial of service.
Weakness: CWE-400
Which versions are affected by CVE-2026-23809?
It affects 1 product.
Products include Arubanetworks Arubaos.
How do I fix CVE-2026-23809?
No fix has been published for CVE-2026-23809 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23809 being exploited?
There is no known exploitation of CVE-2026-23809 in the wild and no public exploit code.
Other vulnerabilities in Arubanetworks Arubaos
- CVE-2024-42393 Memory corruption in Hpe Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10
- CVE-2024-42394 Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10
- CVE-2024-42395 Memory corruption in HPE Aruba Networking InstantOS and Aruba Access Points running ArubaOS 10
- CVE-2024-31466 Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol
- CVE-2024-31467 Unauthenticated Buffer Overflow Vulnerabilities in CLI Service Accessed by the PAPI Protocol
Sources
Also known as GHSA-r2rg-jmvf-rf47.