CVE-2024-36441
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 · uneditedSwissphone DiCal-RED 4009 devices allow an unauthenticated attacker use a port-2101 TCP connection to gain access to operation messages that are received by the device.
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 Swissphone DiCal-RED 4009 devices expose operation messages through an unauthenticated TCP service on port 2101. An unauthenticated remote attacker can connect to this port and intercept sensitive operational communications received by the device, leading to information disclosure.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS 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
- Physical
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L
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 Swissphone DiCal-RED 4009 devices on your networkScan your network for devices matching the Swissphone DiCal-RED 4009 model, or review network device inventories for this specific device typeAffected if The device is a Swissphone DiCal-RED 4009 and is present on your network
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Check if port 2101 is open and reachablePerform a TCP port scan against the device IP address on port 2101 using tools such as nmap -p 2101 <device_ip> or netcat nc -zv <device_ip> 2101Affected if Port 2101 returns as open and accepts TCP connections
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Verify the service accepts unauthenticated connectionsConnect to port 2101 using telnet, netcat, or a TCP client without providing any credentials: nc <device_ip> 2101. Observe if the connection is accepted without authentication promptsAffected if The TCP service on port 2101 accepts connections and returns data or operational messages without requiring any login credentials
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Inspect if sensitive operational messages are transmittedCapture traffic on port 2101 using tcpdump, Wireshark, or similar packet capture tools while the device is in normal operation. Analyze if the captured data contains operational communications in plaintextAffected if Plaintext operational communications are visible in the captured traffic from port 2101 without any encryption or authentication requirement
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Check network access controls on port 2101Review firewall rules, ACLs, or network segmentation policies to determine if port 2101 is accessible from untrusted networks or the general network segment rather than only from secured management networksAffected if Port 2101 is accessible from network segments that include untrusted or non-management users or systems
You are affected if a Swissphone DiCal-RED 4009 device on your network has port 2101 open and the TCP service accepts unauthenticated connections that expose plaintext operational messages.
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 dataRestrict network access to port 2101 using firewall rules or network segmentation, or disable the exposed service if not required. If the device supports authentication, enable it for the port 2101 service.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-36441 — 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-2024-36441 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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