Your RSA-2048 keys break in 2030. Find every one of them before attackers do.
CISA KEV·Added 2023-04-21 — agencies required to remediate by 2023-05-12 · Ransomware

CVE-2023-27350

CRITICAL

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.…

Published
Apr 20, 2023
Updated
Oct 27, 2025
Affected
0 pkgs
Patched
None yet
Exploits
20 known

EPSS Exploitation Probability

via FIRST.org ↗
94.3%probability of exploitation in next 30 days
Very High Risk100th percentile0.00%
93.8%94.1%94.4%94.8%94.3%94.3%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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.

Affected Products

2 products · 6 configurations
Application
papercut mfpapercut
≥ 22.0.0 && < 22.0.9
range
Application
papercut ngpapercut
≥ 22.0.0 && < 22.0.9
range
Exploits & PoCs
20

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

EDB-51452webappsmultiple

PaperCut NG/MG 22.0.4 - Remote Code Execution (RCE)

by MaanVader · May 23, 2023

Exploit-DB Source
EDB-51391webappsmultiple

PaperCut NG/MG 22.0.4 - Authentication Bypass

by MaanVader · Apr 25, 2023

Exploit-DB Source

Frequently Asked Questions

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.
O3 Security · Impact-Aware SCA

Is CVE-2023-27350 in your stack?

O3 detects CVE-2023-27350 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my stack How O3 SCA works