CVE-2023-38132
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 · uneditedLAN-W451NGR all versions provided by LOGITEC CORPORATION contains an improper access control vulnerability, which allows an unauthenticated attacker to log in to telnet 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 · high confidenceThe LAN-W451NGR router from LOGITEC CORPORATION contains an improper access control vulnerability allowing unauthenticated attackers to directly access the telnet service. This high-severity (CVSS 8.8) issue enables remote attackers to gain unauthorized access to the device's command-line interface without any credentials.
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 dataall versionsCVSS 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
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/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 the device modelLocate the device label on the router or check the web administration interface for the exact model number. Look for LOGITEC LAN-W451NGR or Elecom W451ngr markings.Affected if The device is a LOGITEC LAN-W451NGR or Elecom Lan W451ngr router (all firmware versions are affected)
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Check if telnet port 23 is openFrom a system on the same network, run 'telnet <device_ip>' or use a port scanner (nmap -p 23 <device_ip>) to test if port 23 is listening.Affected if Port 23/telnet is open and reachable on the device
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Verify telnet allows unauthenticated accessAttempt to connect to the telnet service without providing any credentials. Observe if a command prompt or shell is granted immediately.Affected if Telnet connection completes and provides shell access without requiring any username or password
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Check network exposure of telnet serviceReview firewall rules or network ACLs to determine if telnet port 23 is accessible from outside the local network or from untrusted interfaces.Affected if Telnet service is accessible from untrusted networks or the internet rather than being restricted to an isolated management VLAN
You are affected if you have a LOGITEC LAN-W451NGR or Elecom W451ngr router with telnet port 23 exposed and accessible without authentication.
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 dataDisable the telnet service on the device if supported, or implement network-layer firewall controls to block unauthorized telnet access. If the device cannot be secured, consider replacing it with a currently supported router model.
- Consultation2.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2023-38132 — 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-2023-38132 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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