CVE-2026-23809
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis vulnerability adapts the known port-stealing technique to Wi-Fi environments using multiple BSSIDs (Basic Service Set Identifiers). By manipulating the relationship between BSSIDs and their associated virtual ports, an attacker can bypass inter-BSSID isolation controls, potentially redirecting and intercepting victim network traffic for eavesdropping, session hijacking, or denial of service.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 6.5.4.0, <= 8.10.0.21>= 8.11.0.0, <= 8.12.0.6>= 8.13.0.0, <= 8.13.1.1>= 10.3.0.0, <= 10.4.1.10>= 10.5.0.0, <= 10.7.2.2= 10.8.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify ArubaOS versionRun 'show version' on the Aruba controller or access 'Aruba Central' dashboard to view the OS versionAffected if The installed version falls within any of these ranges: >= 6.5.4.0 <= 8.10.0.21; >= 8.11.0.0 <= 8.12.0.6; >= 8.13.0.0 <= 8.13.1.1; >= 10.3.0.0 <= 10.4.1.10; >= 10.5.0.0 <= 10.7.2.2; = 10.8.0.0
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Verify multiple BSSID configurationRun 'show wlan ssid-profile' or access the wireless configuration section to list all configured SSIDs and their associated BSSIDsAffected if Multiple BSSIDs are configured on a single access point or controller, increasing the attack surface for BSSID manipulation
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Check inter-BSSID isolation settingsRun 'show wlan virtual-ap' or review the virtual AP profile settings to inspect inter-BSSID isolation and VLAN isolation configurationsAffected if Inter-BSSID isolation is disabled or weak VLAN segmentation exists between BSSIDs
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Identify active but unused BSSIDsRun 'show ap bss-table' to list all active BSSIDs and cross-reference with your documented wireless network design to identify unexpected or undocumented BSSIDsAffected if Undocumented or unused BSSIDs are active on the network, which could indicate exploitation or misconfiguration
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Monitor for anomalous wireless traffic patternsUse Aruba AirWave or a wireless intrusion detection system to review traffic logs for signs of BSSID spoofing, unexpected reassociation patterns, or unusual multicast/broadcast traffic flows between BSSIDsAffected if Traffic analysis reveals abnormal patterns consistent with port-stealing behavior such as unexpected traffic redirection or interception attempts
A user is affected if their ArubaOS version matches the affected ranges AND multiple BSSIDs are configured with inadequate inter-BSSID isolation, creating conditions for the port-stealing attack vector.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataOrganizations should review wireless network segmentation policies, disable unused BSSIDs, implement strong VLAN isolation between BSSIDs, and monitor for anomalous wireless traffic patterns indicative of port-stealing attacks.
- Consultation12.0 h
- Implementation20.0 h
- Testing16.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-23809 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-23809 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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