CVE-2024-40088
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 Directory Traversal vulnerability in the Boa webserver of Vilo 5 Mesh WiFi System <= 5.16.1.33 allows remote, unauthenticated attackers to enumerate the existence and length of any file in the filesystem by placing malicious payloads in the path of any HTTP request.
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 directory traversal vulnerability in the Boa webserver component of Vilo 5 Mesh WiFi System firmware versions 5.16.1.33 and below allows remote, unauthenticated attackers to manipulate HTTP request paths to enumerate whether arbitrary files exist on the filesystem and determine their sizes.
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<= 5.16.1.33CVSS 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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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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Identify Vilo 5 firmware versionAccess the device's web administration interface and navigate to the System or Status page to view the firmware version, or use the device's mobile app if available. Alternatively, check your device documentation for how to retrieve the firmware version.Affected if The firmware version is 5.16.1.33 or lower.
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Confirm Boa webserver is accessibleAttempt to access the device's web interface via HTTP on the typical ports (80 or 8080) from a network-connected host. The Boa webserver typically serves the device's admin interface.Affected if The Boa webserver responds to HTTP requests, indicating it is running and accessible.
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Verify unauthenticated access is possibleAttempt to access the web interface without providing any login credentials. Try navigating to common paths like / or /index.html to see if the login page or admin interface is reachable without authentication.Affected if The web interface or login page is accessible without requiring authentication.
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Test for directory traversal response differencesIf you have authorization, send HTTP requests with modified paths such as ../../etc/passwd or ../../proc/version and observe whether the server returns different responses (error messages versus file content or size indicators).Affected if The server returns different responses that indicate file existence or size based on path manipulation.
You are affected if your Vilo 5 device runs firmware version 5.16.1.33 or lower and the Boa webserver is accessible to unauthenticated network attackers.
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 dataApply vendor firmware updates when available; if no patch exists, implement network segmentation to restrict access to the device's web interface and deploy intrusion detection monitoring for suspicious path traversal patterns in HTTP requests.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-40088 — 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-2024-40088 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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