CVE-2023-27351

7.5 HIGH CISA KEV - Actively Exploited
Published: April 20, 2023 Modified: April 21, 2026
View on NVD

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 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Source: zdi-disclosures@trendmicro.com
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-232/
Source: zdi-disclosures@trendmicro.com
Third Party Advisory VDB Entry
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219
Source: af854a3a-2127-422b-91ae-364da2661108
Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-232/
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
US Government Resource

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
7.5 / 10.0
EPSS (Exploit Probability)
86.1%
99th percentile
Exploitation Status
Actively Exploited
Remediation due: 2026-05-04

Weaknesses (CWE)

CWE-287

Affected Vendors

papercut

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