How severe is CVE-2026-23809?

CVE-2026-23809 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2026-23809 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23809?

CVE-2026-23809 primarily affects Arubanetworks Arubaos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-23809?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-23809 have an EU (EUVD) identifier?

Yes. CVE-2026-23809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9415.

When was CVE-2026-23809 published?

CVE-2026-23809 was published on 2026-03-04 and last updated on 2026-06-17.

CVE-2026-23809

CVE-2026-23809 is a medium-severity vulnerability in Arubanetworks Arubaos with a CVSS 3.x base score of 5.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-400.

Key facts

Severity: Medium (CVSS 3.x base score 5.4)
EPSS exploit prediction: 0% (17th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9415
Weakness: CWE-400
Affected product: Arubanetworks Arubaos
Published: 2026-03-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-23809?: 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.
How severe is CVE-2026-23809?: CVE-2026-23809 has a CVSS 3.x base score of 5.4, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2026-23809 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (17th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23809?: CVE-2026-23809 primarily affects Arubanetworks Arubaos. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-23809?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23809 have an EU (EUVD) identifier?: Yes. CVE-2026-23809 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9415.
When was CVE-2026-23809 published?: CVE-2026-23809 was published on 2026-03-04 and last updated on 2026-06-17.

References

https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05026en_us&docLocale=en_US

Affected products (2)

cpe:2.3:o:arubanetworks:arubaos:*:*:*:*:*:*:*:*
cpe:2.3:o:arubanetworks:arubaos:10.8.0.0:*:*:*:*:*:*:*

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