CVE-2023-27350

9.8 CRITICAL CISA KEV - Actively Exploited
Published: April 20, 2023 Modified: October 27, 2025
View on NVD

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html
Source: zdi-disclosures@trendmicro.com
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html
Source: zdi-disclosures@trendmicro.com
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html
Source: zdi-disclosures@trendmicro.com
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html
Source: zdi-disclosures@trendmicro.com
Exploit Third Party Advisory VDB Entry
https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/
Source: zdi-disclosures@trendmicro.com
Third Party Advisory
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Source: zdi-disclosures@trendmicro.com
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-233/
Source: zdi-disclosures@trendmicro.com
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Third Party Advisory VDB Entry
https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-233/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27350
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

15 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.8 / 10.0
EPSS (Exploit Probability)
94.3%
100th percentile
Exploitation Status
Actively Exploited
Remediation due: 2023-05-12

Weaknesses (CWE)

CWE-284

Affected Vendors

papercut

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