CVE-2020-8330Network attack vector

Print-service interruption via crafted network packet

Published May 28, 2020 · Updated Sep 16, 2024

Denial of service in Lenovo Printer LJ4010DN firmware before 1.01 allows remote attackers to interrupt print jobs via a crafted packet. Lenovo has not published the packet format, affected protocol, or firmware processing locus that mishandles the input. No authentication or user interaction is required, and recovery requires rebooting the printer before queued or subsequent printing can resume.

CVSS severity5.3
Medium
EPSS probability1.54%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Lenovo Printer LJ4010DN firmware before 1.01 allows remote attackers to interrupt print jobs via a crafted packet. Lenovo has not published the packet format, affected protocol, or firmware processing locus that mishandles the input. No authentication or user interaction is required, and recovery requires rebooting the printer before queued or subsequent printing can resume.

The record

CVE
CVE-2020-8330
Published
May 28, 2020
Updated
Sep 16, 2024
Vendor
Lenovo
Product
Lenovo Printer LJ4010DN
Classifications
T1498
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <1.01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Lenovo · Lenovo Printer LJ4010DNversion=unspecified <1.01

Published CVSS scores

7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
5.3Lenovo PSIRTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1498Network Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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