CVE Feed

    Dashboard / CVE / CVE-2023-27350

    CVE-2023-27350

    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:Apr 20, 2023
    Last Modified:Oct 27, 2025
    EPS:Apr 20, 2023
    EPSS Score:0.94216
    CVSS Score:9.8

    CISA Notification

    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.

    Required Action:

    Apply updates per vendor instructions.

    Notes:

    No extra notes provided.

    Due Date
    May 12, 2023
    1218 days ago
    Alert Date
    Apr 21, 2023
    1239 days ago

    Affected Products

    Vendor
    Papercut
    Product
    Papercut Mf
    Vendor
    Papercut
    Product
    Papercut Ng

    Exploits

    http://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.htmlhttp://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.htmlhttp://packetstormsecurity.com/files/172022/PaperCut-NG-MG-22.0.4-Authentication-Bypass.htmlhttp://packetstormsecurity.com/files/172512/PaperCut-NG-MG-22.0.4-Remote-Code-Execution.htmlhttp://packetstormsecurity.com/files/172780/PaperCut-PaperCutNG-Authentication-Bypass.htmlhttps://www.exploit-db.com/exploits/51391https://github.com/0xB0y426/CVE-2023-27350-PoChttps://github.com/adhikara13/CVE-2023-27350https://github.com/Ap0dexMe0/CVE-2023-27350https://github.com/ASG-CASTLE/CVE-2023-27350https://github.com/dezso-dfield/CVE-2023-27350https://github.com/horizon3ai/CVE-2023-27350https://github.com/HORKimhab/CVE-2023-27350-CVE-2023-27351https://github.com/imancybersecurity/CVE-2023-27350-POChttps://github.com/Jenderal92/CVE-2023-27350https://github.com/joaoaugustom/PaperCut-Authentication_Bypass_and_RCEhttps://github.com/MaanVader/CVE-2023-27350-POChttps://github.com/monke443/CVE-2023-27350https://github.com/rasan2001/CVE-2023-27350-Ongoing-Exploitation-of-PaperCut-Remote-Code-Execution-Vulnerabilityhttps://github.com/Royall-Researchers/CVE-2023-27350https://github.com/ThatNotEasy/CVE-2023-27350https://www.exploit-db.com/exploits/51452

    Common Weakness Enumeration

    CWE-284 Improper Access Control

    Related CVEs

    CVE-2026-82078 (CVSS 9.4) — An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and P…
    CVE-2026-81578 (CVSS 8.8) — An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG…
    CVE-2026-8794 (CVSS 6.9) — PaperCut NG/MF contains an observable timing discrepancy in its authentication component. An unauthenticated r…
    CVE-2026-8793 (CVSS 6.9) — PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An una…
    CVE-2026-6418 (CVSS 4.6) — An issue was discovered in the Shared Account Synchronization component of PaperCut MF (version 25.0.4). The a…
    CVE-2026-6180 (CVSS 4.1) — A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices.…
    CVE-2026-5115 (CVSS 3.6) — The PaperCut NG/MF (specifically, the embedded application for Konica Minolta devices) is vulnerable to sessio…
    CVE-2026-4794 (CVSS 2.1) — Multiple cross-site scripting (XSS) vulnerabilities in PaperCut NG/MF before 25.0.10 allow authenticated admin…
    CVE-2024-9672 (CVSS 6.3) — A reflected cross-site scripting (XSS) vulnerability exists in PaperCut NG/MF. This issue can be used to execu…
    CVE-2024-8404 (CVSS 7.8) — An arbitrary file deletion vulnerability exists in PaperCut NG/MF, specifically affecting Windows servers with…

    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

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High