SARA / Free Tools / CVE / CVE-2023-27350

CVE-2023-27350 — PaperCut MF/NG Improper Access Control Vulnerability

This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SetupCompleted class. The issue results from improp

CVSS
9.8 CRITICAL
EPSS
94.26% (top 0.10%)
CWE
CWE-284
Published
2023-04-20T00:00:00.000Z
Last modified
2025-10-21T23:05:48.700Z
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA KEV — Actively Exploited
Added to KEV
2023-04-21
BOD 22-01 due
2023-05-12
Ransomware use
Known

01What is this vulnerability?

This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SetupCompleted class. The issue results from improper access control. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in…

02Affected products

VendorProductVersions
PaperCutNG22.0.5 (Build 63914)

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2023-04-21. Ransomware use: Known.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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