CVE-2006-0789
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 · uneditedCertain unspecified Kyocera printers have a default "admin" account with a blank password, which allows remote attackers to access an administrative menu via a telnet session.
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 confidenceKyocera printers contain a hardcoded default administrator account with a blank password. The 'admin' account is accessible remotely via telnet, allowing unauthenticated attackers to gain full administrative control over the printer device.
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
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:L/Au:N/C:C/I:C/A:C
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 Kyocera printer modelAccess the printer's web interface, check the label on the device, or query the device via SNMP or the front panel display to confirm the exact model number is Kyocera Fs 3830nAffected if The installed device model is Kyocera Fs 3830n
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Confirm telnet service is accessibleFrom a network-connected host, attempt to connect to the printer's IP address on port 23 using telnet (e.g., telnet [printer-ip] 23) or run a port scan targeting port 23 on the printerAffected if Port 23/telnet is open and accepting connections on the printer
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Verify the default admin account is activeLog in to the telnet session using username 'admin' with a blank/empty password. If the login succeeds and grants administrative access, the vulnerability is presentAffected if Authentication succeeds with username 'admin' and an empty password, providing full administrative access
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Check telnet access from external networksReview the printer's network configuration settings via its web interface or telnet to determine if telnet access is permitted from outside the local network or from any IP addressAffected if Telnet access is enabled and reachable from untrusted network segments or the public internet
You are affected if you have a Kyocera Fs 3830n printer with telnet port 23 accessible on the network and the default 'admin' account accepts a blank password for 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 dataImmediately change or disable the default 'admin' account password on affected Kyocera printers. Disable telnet access if not required, or restrict telnet to trusted internal networks only.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2006-0789 — 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-2006-0789 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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