CVE-2024-32388
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 · uneditedDue to a firewall misconfiguration, Kerlink devices running KerOS prior to 5.12 incorrectly accept specially crafted UDP packets. This allows an attacker to bypass the firewall and access UDP-based services that would otherwise be protected.
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 · high confidenceKerlink IoT gateway devices running KerOS versions prior to 5.12 have a firewall misconfiguration that causes them to incorrectly process specially crafted UDP packets. This allows remote attackers to bypass the firewall rules and access UDP-based services that should be blocked.
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>= 5.0, < 5.12CVSS 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 installed KerOS versionAccess the gateway via SSH or console and run 'uname -a' or check /etc/version or use the CLI command 'keros-cli get version' to retrieve the installed KerOS versionAffected if The version displayed is 5.0.x through 5.11.x (any version >= 5.0 but < 5.12)
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Verify UDP service accessibilityFrom an external host, use a tool like netcat or nmap to send UDP packets to the gateway's IP address on common UDP service ports (such as DNS port 53, SNMP port 161, or other known UDP services)Affected if UDP packets reach services that should be blocked by the firewall, indicating the firewall bypass is active
The gateway is affected if it runs KerOS version 5.0 through 5.11.x and UDP services that should be blocked are reachable from external networks.
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 · scoped5.12
Upgrade KerOS to version 5.12 or later to remediate the firewall misconfiguration. After upgrading, verify that UDP services are properly protected by the firewall.
KerOS 5.12
- Identify the current KerOS version running on the Kerlink device via the device management interface or CLI
- Access the official Kerlink documentation at keros.docs.kerlink.com to obtain the KerOS 5.12 firmware image
- Follow Kerlink's standard firmware upgrade procedure to apply KerOS version 5.12 to the affected device
- After upgrade, verify the device is running KerOS 5.12 and confirm the firewall correctly blocks specially crafted UDP packets
Generated from the published advisory — verify against the referenced sources before acting.
- 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.
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Free · runs locallyCheck whether your project pulls in CVE-2024-32388 — 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-2024-32388 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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