CVE-2023-4568Public exploitNetwork attack vector

Unauthenticated configuration disclosure via wildcard XMLRPC allowlists

Published Sep 13, 2023 · Updated Sep 25, 2024

Improper authentication in PaperCut NG 22.0.12 and earlier allows remote attackers to read configuration or register printers via XMLRPC. Wildcard defaults in IP allowlists such as auth.providers.allowed-addresses admit unauthenticated calls to provider and client XMLRPC endpoints. Network reachability to port 9192 is required; exposed callers can read global configuration or add printer records, while no service interruption is reported.

CVSS severity6.5
Medium
EPSS probability3.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in PaperCut NG 22.0.12 and earlier allows remote attackers to read configuration or register printers via XMLRPC. Wildcard defaults in IP allowlists such as auth.providers.allowed-addresses admit unauthenticated calls to provider and client XMLRPC endpoints. Network reachability to port 9192 is required; exposed callers can read global configuration or add printer records, while no service interruption is reported.

The record

CVE
CVE-2023-4568
Published
Sep 13, 2023
Updated
Sep 25, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.4NVDAV:N/AC:L/Au:N/C:P/I:P/A:N
6.5TenableCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/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.

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 exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

Public exploit references

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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