CVE-2023-27350 KEV EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 100% (pctl 100)
Patch first
On CISA KEV — known exploited in the wild, due 2023-05-12.
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 100% — more likely to be exploited than 100% of all CVEs |
| Weakness | CWE-284 |
| On CISA KEV | yes — remediate by 2023-05-12 |
| Public exploit | yes |
| Published | 2023-04-20 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | PaperCut MF/NG Improper Access Control Vulnerability |
|---|---|
| Added | 2023-04-21 |
| Due | 2023-05-12 |
| Vendor / product | PaperCut / MF/NG |
| Ransomware use | known |
Affected (2)
| Vendor | Product |
|---|---|
| papercut | papercut mf |
| papercut | papercut ng |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | PaperCut NG/MG 22.0.4 - Remote Code Execution (RCE) | 2023-05-23 |
| exploit-db | PaperCut NG/MG 22.0.4 - Authentication Bypass | 2023-04-25 |
References
- http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html
- https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
- https://www.zerodayinitiative.com/advisories/ZDI-23-233/
- http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html
- http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html
- https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
- https://www.zerodayinitiative.com/advisories/ZDI-23-233/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27350
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