CVE-2023-27350
PaperCut MF/NG Improper Access Control Vulnerability
- Published
- Apr 20, 2023
- Updated
- Oct 21, 2025
- Assigning CNA
- zdi
- Evidence observed
- Apr 21, 2023
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HHigh · next 30 days
- Percentile
- 100.0%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
CISA Known Exploited
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
Summary
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 the context of SYSTEM. Was ZDI-CAN-18987.
Sources
17- CVE-2023-27350Exploit
Exploit for Papercut CVE-2023-27350. [+] Reverse shell [+] Mass checking
- CVE-2023-27350Exploit
Perfom With Massive Authentication Bypass In PaperCut MF/NG
Proof-of-concept exploit for CVE-2023-27350 in PaperCut NG; exploits SetupCompleted access-control flaw to bypass authentication and execute code as SYSTEM.
Responsible use
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