CVE-2026-23811: Arubanetworks Arubaos

Low severity, CVSS 3.1. EPSS: 0.2% chance of exploitation in the next 30 days.

A vulnerability in the client isolation mechanism may allow an attacker to bypass Layer 2 (L2) communication restrictions between clients and redirect traffic at Layer 3 (L3). In addition to bypassing policy enforcement, successful exploitation - when combined with a port-stealing attack - may enable a bi-directional Machine-in-the-Middle (MitM) attack.

Affected products

• Arubanetworks Arubaos: from 6.5.4.0, up to and including 8.10.0.21; from 8.11.0.0, up to and including 8.12.0.6; from 8.13.0.0, up to and including 8.13.1.1; from 10.3.0.0, up to and including 10.4.1.10; from 10.5.0.0, up to and including 10.7.2.2; version 10.8.0.0 only

Published 2026-03-04. Last modified 2026-06-17.