CVE Watch1 oct 2026

CVE-2023-27351

PaperCut NG/MF Improper Authentication Vulnerability

CVSS

7.5

Alto

EPSS

78.1%

p100

KEV

SÍ

20 abr 2026

Exploit Today

0-100

Publicado: 20 abr 2023 · Última mod.: 1 oct 2026 · CWE-287

EPSS · 30d

78.1%EPSS · 30 días78.1%

2026-09-162026-10-14

Ficha del catálogo KEV

Producto

PaperCut / NG/MF

Vulnerabilidad

PaperCut NG/MF Improper Authentication Vulnerability

Añadido a KEV

20 abr 2026

Remediar antes de

4 may 2026

Uso conocido en ransomware

Sí

Descripción resumida

PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.

Acción requerida

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notas

https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 ; https://nvd.nist.gov/vuln/detail/CVE-2023-27351

Descripción técnica

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 SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.

Referencias oficiales

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