CVE-2026-23809

MAC Address Spoofing leads to Inter-BSSID Isolation Bypass Resulting in Traffic Redirection

Medium · published March 4, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
16.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00257 · 16.5th percentile
Published
2026-03-04T16:10Z
EPSS history
Timeline
  • 04 MAR 16:10Z
    MAC Address Spoofing leads to Inter-BSSID Isolation Bypass Resulting in Traffic Redirection
    cvelistv5