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CVE-2023-27351

HIGHCISA KEV

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/20/2023

Last Modified4/21/2026

Sourcenvd

Honeypot Sightings0

CISA KEV

VendorPaperCut

ProductNG/MF

Vulnerability NamePaperCut NG/MF Improper Authentication Vulnerability

KEV Date Added2026-04-20

Remediation Due Date2026-05-04

Ransomware UseKnown

Affected Products

papercut:papercut_mfpapercut:papercut_ng

Weaknesses (CWE)

CWE-287

References

https://www.papercut.com/kb/Main/PO-1216-and-PO-1219(zdi-disclosures@trendmicro.com)

https://www.zerodayinitiative.com/advisories/ZDI-23-232/(zdi-disclosures@trendmicro.com)

https://www.papercut.com/kb/Main/PO-1216-and-PO-1219(af854a3a-2127-422b-91ae-364da2661108)

https://www.zerodayinitiative.com/advisories/ZDI-23-232/(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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