CVE-2023-40465
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 · uneditedSeveral versions of ALEOS, including ALEOS 4.16.0, include an opensource third-party component which can be exploited from the local area network, resulting in a Denial of Service condition for the captive portal.
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 confidenceA vulnerability in an open-source third-party component included with ALEOS 4.16.0 and earlier versions can be exploited by attackers on the local network to cause a Denial of Service condition affecting the captive portal functionality.
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<= 4.16.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 the installed ALEOS firmware versionAccess the device's web-based management interface or CLI and navigate to the System Information or Firmware section to view the current ALEOS version numberAffected if The displayed version is 4.16.0 or any earlier version number
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Confirm captive portal functionality is enabledIn the device's management interface, locate the Captive Portal or Hotspot configuration settings and verify whether the feature is currently active/enabledAffected if The captive portal is enabled and operational on the device
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Verify network exposure of the management interfaceCheck the device's network configuration to determine whether the management interface (HTTP/HTTPS or CLI access) is bound to externally accessible network interfaces (such as WAN or all interfaces) rather than only an isolated internal LANAffected if The management interface is reachable from untrusted or external networks
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Review LAN-side access controlsExamine the device's firewall or access control settings to determine if there are restrictions limiting LAN clients to trusted users onlyAffected if There are no access restrictions on the LAN interface, allowing untrusted users to reach the captive portal service
A device is affected if it runs ALEOS version 4.16.0 or earlier, has the captive portal enabled, and has its management interface accessible from untrusted network segments where local attackers could reach it.
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 dataIsolate the affected device's management interface from untrusted networks and apply any available vendor firmware updates that address the vulnerable third-party component. If no update is available, consider network segmentation to limit LAN access to trusted users only.
- Consultation8.0 h
- Implementation4.0 h
- Testing6.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-40465 — 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-2023-40465 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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