CVE-2023-23453
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 · uneditedMissing Authentication for Critical Function in SICK FX0-GENT v3 Firmware Version V3.04 and V3.05 allows an unprivileged remote attacker to achieve arbitrary remote code execution via maliciously crafted RK512 commands to the listener on TCP port 9000.
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 confidenceThe SICK FX0-GENT v3 firmware versions V3.04 and V3.05 lack authentication on the RK512 command listener bound to TCP port 9000. This allows any remote attacker to send specially crafted RK512 commands and achieve arbitrary remote code execution without any credentials or privileges.
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= 3.04= 3.05= 3.04= 3.05CVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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 firmware version of SICK FX0-GENT deviceAccess the device web interface or check the device documentation for the firmware version. This is typically found in the device settings, system information, or diagnostic page.Affected if Firmware version equals exactly 3.04 or 3.05 for models Gent00010 or Gent00000
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Verify TCP port 9000 is listeningRun a network port scan against the device on TCP port 9000 using a tool like nmap (nmap -p 9000 <device_ip>) or netcat (nc -zv <device_ip> 9000).Affected if Port 9000 is open and accepting connections, indicating the RK512 command listener is active
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Confirm network accessibility to port 9000Check if the device with port 9000 is reachable from your network segment. Attempt a TCP connection to port 9000 from an authorized test system on the same network.Affected if The device TCP port 9000 is reachable from your network and accepts connections without authentication prompts
You are affected if you have a SICK FX0-GENT device (Gent00010 or Gent00000) running firmware version 3.04 or 3.05, and TCP port 9000 is open and accessible on your 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 dataRestrict network access to TCP port 9000 using firewall rules or network segmentation to prevent unauthorized external access. If available, apply vendor-supplied firmware updates to address the authentication bypass.
- Consultation6.0 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-2023-23453 — 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-2023-23453 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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