CVE-2020-8330
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 · uneditedA denial of service vulnerability was reported in the firmware prior to version 1.01 used in Lenovo Printer LJ4010DN that could be triggered by a remote user sending a crafted packet to the device, preventing subsequent print jobs until the printer is rebooted.
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 confidenceA denial of service vulnerability in Lenovo Printer LJ4010DN allows remote attackers to send crafted packets that render the device unable to process print jobs until manually rebooted. The vulnerability exists in firmware versions prior to 1.01 and is exploitable over the network without authentication.
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< 1.01< 1.01< 1.01CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 printer modelAccess the printer's web interface, print a configuration page, or check the device label to confirm the exact model number (Lj4010dn, Lj6700dn, or M8960dnf)Affected if The model is one of Lj4010dn, Lj6700dn, or M8960dnf
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Retrieve the installed firmware versionLog into the printer web interface and navigate to the firmware or status page, or print a configuration/test page which typically lists the firmware versionAffected if The firmware version displayed cannot be determined or is not visible
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Compare firmware version to affected rangeCheck the firmware version against the affected range: versions prior to 1.01 are vulnerable. Versions 1.01 and later are not affectedAffected if The installed firmware version is below 1.01 (for example, 1.00, 0.99, or any version number less than 1.01)
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Verify network accessibility of the printerConfirm the printer has an active IP address and is reachable on the network, as the vulnerability is exploitable remotely over the network without authenticationAffected if The printer is network-accessible and has a reachable IP address
The environment is affected if the printer model is Lj4010dn, Lj6700dn, or M8960dnf AND the installed firmware version is below 1.01 AND the device is network accessible.
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 data1.01
Update the printer firmware to version 1.01 or later to remediate this vulnerability.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2020-8330 — 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-2020-8330 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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