CVE-2026-21635
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 · uneditedAn Improper Access Control could allow a malicious actor in Wi-Fi range to the EV Station Lite (v1.5.2 and earlier) to use WiFi AutoLink feature on a device that was only adopted via Ethernet.
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 confidenceThe EV Station Lite v1.5.2 and earlier has an Improper Access Control vulnerability in its WiFi AutoLink feature. A malicious actor within Wi-Fi range can access and use the WiFi AutoLink feature on devices that were only intended to be adopted via Ethernet, bypassing the expected network segregation.
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< 1.6.1CVSS 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
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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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Check the firmware version of the EV Station LiteAccess the UniFi Connect controller UI, navigate to the device list, select the EV Station Lite device, and locate the firmware version field. Alternatively, SSH to the device and run the command to display firmware version.Affected if The firmware version is 1.5.2 or earlier (anything below 1.6.1 is within the affected range).
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Verify if WiFi AutoLink is enabledIn the UniFi Connect controller, go to the EV Station Lite device settings. Locate the WiFi AutoLink configuration option and check whether it is turned ON or OFF.Affected if WiFi AutoLink is enabled (ON). The vulnerability only applies when this feature is active.
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Confirm the device adoption methodCheck the UniFi Connect controller to see how the EV Station Lite was adopted. Look for whether it was adopted via Ethernet connection or if WiFi was used during adoption. Review the device adoption history or network settings.Affected if The device was adopted via Ethernet but has WiFi capability available, indicating it was intended for Ethernet-only adoption.
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Check if the device has an active WiFi interfaceAccess the device via SSH or the controller and verify if WiFi radio interfaces are present and enabled. Look for wireless network adapters or WiFi status in the device network configuration.Affected if The device has an active WiFi interface in addition to Ethernet, which creates the conditions for the bypass.
You are affected if the EV Station Lite is running firmware version 1.5.2 or earlier AND WiFi AutoLink is enabled on a device intended for Ethernet-only adoption.
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.
dbcve · scoped1.6.1
Update EV Station Lite to firmware beyond v1.5.2 and disable WiFi AutoLink on devices adopted solely via Ethernet to prevent unauthorized Wi-Fi access.
1.6.1 or later
- Access the UniFi Connect controller or application where the EV Station Lite is managed
- Locate the affected EV Station Lite device in the device list
- Verify the current firmware version is below 1.6.1
- Initiate a firmware upgrade to version 1.6.1 or the latest available stable release
- Confirm the upgrade completes successfully and verify the device is now running firmware >= 1.6.1
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-21635 — 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-2026-21635 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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- Version or environment caveats, and links to real fixes
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