CVE-2026-23809 | MAC Address Spoofing leads to Inter-BSSID Isolation Bypass Resulting in Traffic Redirection

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.

Published: 2026-03-04 Last update: 2026-03-09 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-23809 is rated Low Risk (22.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.01%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-23809

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-05 — 0.01% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-23809

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.5 [email protected]
7.6 3.1 HIGH
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H Click to expand
Attack vector (AV:A)
Attacker has to be nearby on the network—same office, same link, that vibe—not the whole wide internet.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 4.7 [email protected]

Weakness enumeration for CVE-2026-23809

Affected software / configurations for CVE-2026-23809

Vendor Product Version Raw CPE
arubanetworks arubaos >= 6.5.4.0, <= 8.10.0.21 cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
arubanetworks arubaos >= 8.11.0.0, <= 8.12.0.6 cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
arubanetworks arubaos >= 8.13.0.0, <= 8.13.1.1 cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
arubanetworks arubaos >= 10.3.0.0, <= 10.4.1.10 cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
arubanetworks arubaos >= 10.5.0.0, <= 10.7.2.2 cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
arubanetworks arubaos 10.8.0.0 cpe:2.3:o:arubanetworks:arubaos:10.8.0.0:*:*:*:*:*:*:*

References for CVE-2026-23809

cvelogic Threat Intelligence