CVE-2026-23811

Unauthorized Bi-Directional Traffic Interception via L2/L3 Manipulation

Medium · published March 4, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
4.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00154 · 4.2th percentile
Published
2026-03-04T16:12Z
EPSS history
Timeline
  • 04 MAR 16:12Z
    Unauthorized Bi-Directional Traffic Interception via L2/L3 Manipulation
    cvelistv5