PaperCut MF/NG Improper Access Control Vulnerability

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Summary

CVECVE-2023-27350
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-04-20 16:15:00 UTC
Updated2023-06-07 18:15:00 UTC
DescriptionThis 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 the context of SYSTEM. Was ZDI-CAN-18987.

Risk And Classification

EPSS: 0.942570000 probability, percentile 0.999340000 (date 2026-04-04)

CISA KEV: Listed on 2023-04-21; due 2023-05-12; ransomware use Known

Problem Types: CWE-284

CISA Known Exploited Vulnerability

VendorPaperCut
ProductMF/NG
NamePaperCut MF/NG Improper Access Control Vulnerability
Required ActionApply updates per vendor instructions.
Noteshttps://www.papercut.com/kb/Main/PO-1216-and-PO-1219; https://nvd.nist.gov/vuln/detail/CVE-2023-27350

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Papercut Papercut Mf All All All All
Application Papercut Papercut Ng All All All All

References

ReferenceSourceLinkTags
PaperCut PaperCutNG Authentication Bypass ≈ Packet Storm MISC packetstormsecurity.com
Increased exploitation of PaperCut drawing blood around the Internet – Sophos News MISC news.sophos.com
PaperCut NG/MG 22.0.4 Authentication Bypass ≈ Packet Storm MISC packetstormsecurity.com
PaperCut NG/MG 22.0.4 Remote Code Execution ≈ Packet Storm MISC packetstormsecurity.com
PaperCut MF/NG Authentication Bypass / Remote Code Execution ≈ Packet Storm MISC packetstormsecurity.com
ZDI-23-233 | Zero Day Initiative MISC www.zerodayinitiative.com
APRIL 19 UPDATE | PaperCut MF/NG vulnerability bulletin (March 2023) | PaperCut MISC www.papercut.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 150721 PaperCut NG/MF Remote Code Execution (RCE) Vulnerability (CVE-2023-27350)
  • 378441 PaperCut NG Remote Code Execution (RCE) Vulnerability
  • 730790 PaperCut NG/MF Multiple Security Vulnerabilities (PO-1216 and PO-1219)
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