CVE-2026-23811

Published Mar 4, 2026

Last updated 4 days ago

CVSS medium 4.3

Overview

Description
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.
Source
security-alert@hpe.com
NVD status
Analyzed
Products
arubaos

Risk scores

CVSS 3.1

Type
Primary
Base score
3.1
Impact score
1.4
Exploitability score
1.6
Vector string
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Severity
LOW

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-300

Social media

Hype score
Not currently trending

Configurations

Related CVEs

  1. A vulnerability has been identified where an attacker connecting to an access point as a standard wired or wireless client can impersonate a gateway by leveraging an address-based spoofing technique. Successful exploitation enables the redirection of data streams, allowing for the interception or modification of traffic intended for the legitimate network gateway via a Machine-in-the-Middle (MitM) position.•CVE-2026-23812
  2. A vulnerability in the packet processing logic may allow an authenticated attacker to craft and transmit a malicious Wi-Fi frame that causes an Access Point (AP) to classify the frame as group-addressed traffic and re-encrypt it using the Group Temporal Key (GTK) associated with the victim's BSSID. Successful exploitation may enable GTK-independent traffic injection and, when combined with a port-stealing technique, allows an attacker to redirect intercepted traffic to facilitate machine-in-the-middle (MitM) attacks across BSSID boundaries.•CVE-2026-23810
  3. 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.•CVE-2026-23809
  4. A vulnerability has been identified in a standardized wireless roaming protocol that could enable a malicious actor to install an attacker-controlled Group Temporal Key (GTK) on a client device. Successful exploitation of this vulnerability could allow a remote malicious actor to perform unauthorized frame injection, bypass client isolation, interfere with cross-client traffic, and compromise network segmentation, integrity, and confidentiality.•CVE-2026-23808
  5. A vulnerability has been identified in the wireless encryption handling of Wi-Fi transmissions. A malicious actor can generate shared-key authenticated transmissions containing targeted payloads while impersonating the identity of a primary BSSID.Successful exploitation allows for the delivery of tampered data to specific endpoints, bypassing standard cryptographic separation.•CVE-2026-23601

References

Sources include official advisories and independent security research.