{"id":"CVE-2023-27350","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-27350","generatedAt":"2026-10-23T13:05:36.106Z","title":"PaperCut MF/NG Improper Access Control Vulnerability","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.","published":"2023-04-20T16:15:08.000Z","lastModified":"2026-06-17T05:44:51.000Z","status":"Analyzed","sourceIdentifier":"zdi-disclosures@trendmicro.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-284"],"affected":["papercut/papercut mf","papercut/papercut ng"],"epss":{"score":0.99999,"percentile":0.99995,"date":"2026-10-22","history":[]},"kev":{"listed":true,"dateAdded":"2023-04-21","dueDate":"2023-05-12","knownRansomwareCampaignUse":"Known","notes":"Apply updates per vendor instructions.\nhttps://www.papercut.com/kb/Main/PO-1216-and-PO-1219;  https://nvd.nist.gov/vuln/detail/CVE-2023-27350"},"exploits":{"count":2,"verified":false,"firstPublished":"2023-04-25","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":51452,"kind":"exploit","title":"PaperCut NG/MG 22.0.4 - Remote Code Execution (RCE)","url":"https://www.exploit-db.com/exploits/51452","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/51452.py","file":"exploits/multiple/webapps/51452.py","published":"2023-05-23","added":"2023-05-23","updated":"2023-05-23","author":"MaanVader","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2023-27350"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":51391,"kind":"exploit","title":"PaperCut NG/MG 22.0.4 - Authentication Bypass","url":"https://www.exploit-db.com/exploits/51391","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/multiple/webapps/51391.py","file":"exploits/multiple/webapps/51391.py","published":"2023-04-25","added":"2023-04-25","updated":"2023-04-25","author":"MaanVader","type":"webapps","platform":"multiple","port":null,"verified":false,"codes":["CVE-2023-27350"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 12 May 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html","tags":["Third Party Advisory","VDB Entry"],"source":"zdi-disclosures@trendmicro.com"},{"url":"http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"zdi-disclosures@trendmicro.com"},{"url":"http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"zdi-disclosures@trendmicro.com"},{"url":"http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"zdi-disclosures@trendmicro.com"},{"url":"https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/","tags":["Third Party Advisory"],"source":"zdi-disclosures@trendmicro.com"},{"url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","tags":["Vendor Advisory"],"source":"zdi-disclosures@trendmicro.com"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-233/","tags":["Third Party Advisory","VDB Entry"],"source":"zdi-disclosures@trendmicro.com"},{"url":"http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-233/","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27350","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-27350","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}