CVE-2023-4063Network attack vector

Service interruption via improper eSCL GET request

Published Mar 22, 2024 · Updated Mar 28, 2025

Denial of service in certain HP OfficeJet Pro printers allows remote attackers to interrupt printing via an improper eSCL URL GET request. HP identifies the eSCL URL GET request as the trigger but has not disclosed the malformed condition or the request-handling failure. Network access to the printer is sufficient; no authentication or user interaction is required, and the reported consequence is limited to service interruption.

CVSS severity5.3
Medium
EPSS probability0.57%
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 certain HP OfficeJet Pro printers allows remote attackers to interrupt printing via an improper eSCL URL GET request. HP identifies the eSCL URL GET request as the trigger but has not disclosed the malformed condition or the request-handling failure. Network access to the printer is sufficient; no authentication or user interaction is required, and the reported consequence is limited to service interruption.

The record

CVE
CVE-2023-4063
Published
Mar 22, 2024
Updated
Mar 28, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-400, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.3CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint 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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