CVE-2023-30603
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 · uneditedHitron Technologies CODA-5310 Telnet function with the default account and password, and there is no warning or prompt to ask users to change the default password and account. An unauthenticated remote attackers can exploit this vulnerability to obtain the administrator’s privilege, resulting in performing arbitrary system operation or disrupt 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 Hitron CODA-5310 router has a Telnet service with hardcoded default credentials that cannot be changed through the web interface. An unauthenticated attacker can connect directly to Telnet using these default credentials and immediately obtain full administrator privileges, allowing arbitrary system command execution or service disruption.
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= 7.2.4.7.1b3CVSS 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 the router modelAccess the router's web interface or check the device label to confirm the model is Hitron CODA-5310Affected if The device is not a Hitron CODA-5310 router
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Check the firmware versionLog into the router web interface and navigate to the firmware or status page to view the installed firmware version, or use the command line and run 'cat /proc/version' or 'ver' if available via Telnet/SSHAffected if The firmware version is exactly 7.2.4.7.1b3
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Verify if Telnet service is enabledCheck the router web interface for Telnet settings under advanced or administration menus, or scan the router's external IP on port 23 using a network scanner like 'nmap -p 23 <router_ip>'Affected if Telnet service is enabled and accessible on the router
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Confirm default credentials are in useAttempt to connect to the Telnet service using the known default credentials for this device, or check if the web interface allows changing Telnet credentials (the vulnerability states credentials cannot be changed through the web interface)Affected if Telnet accepts the default hardcoded credentials and provides administrative access
You are affected if you have a Hitron CODA-5310 router running firmware version 7.2.4.7.1b3 with Telnet enabled and the default hardcoded credentials still active.
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 dataImmediately change or disable the default Telnet credentials, disable the Telnet service if not required, and apply any available firmware updates from the vendor.
- Consultation2.0 h
- Implementation2.0 h
- Testing1.0 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 $1,744.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-30603 — 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-2023-30603 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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