CVE-2024-39815
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 · uneditedImproper check or handling of exceptional conditions vulnerability affecting Vonets industrial wifi bridge relays and wifi bridge repeaters, software versions 3.3.23.6.9 and prior, enable an unauthenticated remote attacker to cause a denial of service. A specially-crafted HTTP request to pre-authentication resources can crash the 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 confidenceAn improper check or handling of exceptional conditions vulnerability in Vonets industrial wifi bridge devices (versions 3.3.23.6.9 and prior) allows unauthenticated remote attackers to cause denial of service by sending specially-crafted HTTP requests to pre-authentication resources, triggering a service crash.
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<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9<= 3.3.23.6.9CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 device as a Vonets productAccess the device web administration interface, check device labeling, or use network discovery tools to identify the manufacturer and model. The affected models are Var1200 H/L, Var600 H, Vap11ac, Vap11g 500s, Vbg1200, Vap11s 5g, and Vap11s.Affected if The device is one of the listed Vonets models.
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Determine the installed firmware versionLog into the device web interface and navigate to the status or system information page to view the firmware version. Alternatively, check via telnet or console access if available.Affected if The firmware version is 3.3.23.6.9 or lower.
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Verify the HTTP service is accessiblePerform a network port scan (e.g., nmap) targeting the device IP on TCP port 80 or 443 to confirm the HTTP service is exposed.Affected if HTTP (TCP 80) or HTTPS (TCP 443) is open and reachable from an attacker-controlled network segment.
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Confirm pre-authentication HTTP endpoints are exposedAttempt to access common HTTP paths on the device without authentication, such as the root path / or /index.htm, to verify pre-authentication resources are reachable.Affected if HTTP requests to unauthenticated endpoints return valid responses from the device.
The environment is affected if a Vonets wifi bridge device is running firmware version 3.3.23.6.9 or lower and has its HTTP management interface accessible from the network.
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; until then, isolate affected devices behind a firewall or WAF to block malicious HTTP requests, or restrict network access to minimize exposure.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-39815 — 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-2024-39815 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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