{"cve":{"cve_id":"CVE-2023-27350","is_kev":true,"kev_date_added":"2023-04-21","kev_vendor_project":"PaperCut","kev_product":"MF/NG","kev_vulnerability_name":"PaperCut MF/NG Improper Access Control Vulnerability","kev_short_description":"PaperCut MF/NG contains an improper access control vulnerability within the SetupCompleted class that allows authentication bypass and code execution in the context of system.","kev_required_action":"Apply updates per vendor instructions.","kev_due_date":"2023-05-12","kev_known_ransomware":true,"kev_notes":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219;  https://nvd.nist.gov/vuln/detail/CVE-2023-27350","kev_cwes":["CWE-284"],"epss_score":0.99999,"epss_percentile":0.99991,"epss_as_of":"2026-06-23","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_at":"2023-04-20T00:00:00Z","last_modified_at":null,"cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-284"],"nvd_references":["https://www.zerodayinitiative.com/advisories/ZDI-23-233/","https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","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","https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/","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"],"vuln_status":null,"trending_score":0.6099982000001991,"is_trending":true,"has_trended":true,"trended_number_one":false,"trending_peak_score":0.6099982000001991,"trending_peak_rank":27,"started_trending_at":"2026-06-29T02:30:27.366045Z","trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T02:30:27.550645Z"},"effective_severity":"CRITICAL","badges":["kev","ransomware","poc","trending","epss"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"papercut","vendor_name":"PaperCut","product_slug":"ng","product_name":"NG","version_start":"22.0.5 (Build 63914)","version_start_inclusive":true,"version_end":"22.0.5 (Build 63914)","version_end_inclusive":true,"cpe23_uri":"cve5:papercut:ng:22.0.5 (Build 63914):22.0.5 (Build 63914)"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-27350.yaml","title":"PaperCut - Unauthenticated Remote Code Execution","author":"rootxharsh,iamnoooob,pdresearch","disclosed_at":null}],"news":[],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-23-233/","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://www.papercut.com/kb/Main/PO-1216-and-PO-1219","source_type":"MISC","tags":[]},{"url":"http://packetstormsecurity.com/files/171982/PaperCut-MF-NG-Authentication-Bypass-Remote-Code-Execution.html","source_type":"EXPLOIT","tags":["exploit"]},{"url":"http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.html","source_type":"EXPLOIT","tags":["exploit"]},{"url":"https://news.sophos.com/en-us/2023/04/27/increased-exploitation-of-papercut-drawing-blood-around-the-internet/","source_type":"MISC","tags":[]},{"url":"http://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.html","source_type":"EXPLOIT","tags":["exploit"]},{"url":"http://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.html","source_type":"EXPLOIT","tags":["exploit"]}],"timeline":[{"type":"published","at":"2023-04-20T00:00:00Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2023-04-21T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:27:24.170440Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"ssvc_changed","at":"2026-06-29T01:28:33.973490Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:28:33.973490Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-29T01:28:33.973490Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"started_trending","at":"2026-06-29T02:30:27.366045Z","label":"Started trending","source":null}]}