CVE-2024-5143Network attack vector

SMTP credential disclosure via credential-free server redirection

Published May 23, 2024 · Updated Oct 31, 2024

Missing authentication in certain HP LaserJet Pro printer firmware allows remote authenticated users to disclose stored SMTP credentials. The settings workflow accepts a replacement SMTP destination without requiring the stored SMTP credential to be re-entered. Exploitation requires device-administrator privileges and redirects send-to-email traffic to an attacker-controlled SMTP server.

CVSS severity6.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in certain HP LaserJet Pro printer firmware allows remote authenticated users to disclose stored SMTP credentials. The settings workflow accepts a replacement SMTP destination without requiring the stored SMTP credential to be re-entered. Exploitation requires device-administrator privileges and redirects send-to-email traffic to an attacker-controlled SMTP server.

The record

CVE
CVE-2024-5143
Published
May 23, 2024
Updated
Oct 31, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-306, T1555
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. May 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 31, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1555Credentials from Password Stores

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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