CVE-2023-24597Network attack vector

User tracking via automatic print-view resource loading

Published May 29, 2023 · Updated Jan 14, 2025

Information exposure in Open-Xchange OX App Suite frontend allows remote attackers to track users through remote content in printed email. The print view loads an email message’s external resources without applying the setting that blocks automatic remote content for spam or by default. Exploitation requires a user to print the attacker-controlled message, causing tracking resources such as pixels to contact the attacker.

CVSS severity4.2
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Open-Xchange OX App Suite frontend allows remote attackers to track users through remote content in printed email. The print view loads an email message’s external resources without applying the setting that blocks automatic remote content for spam or by default. Exploitation requires a user to print the attacker-controlled message, causing tracking resources such as pixels to contact the attacker.

The record

CVE
CVE-2023-24597
Published
May 29, 2023
Updated
Jan 14, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-200
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 14, 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

4.2Open-Xchange GmbHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/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.

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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

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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