CVE-2023-27351 - CVE House

Back to Database

Status published High CVE-2023-27351

This vulnerability allows remote attackers to bypass authentication on affected...

8.2 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-27351

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative

References

More from PaperCut

View All →

Misconfigured certificate validation with self-signed certificates for Print Deploy

Reflected XSS in PaperCut MF

Arbitrary File Creation in PaperCut NG/MF Web Print leading to a Denial of Service attack

Arbitrary File Deletion in PaperCut NG/MF Web Print Hot folder

Arbitrary File Creation in PaperCut NG/MF Web Print Image Handler

Affected Vendor

PaperCut

View all reports →

Affected Software

NG

Vulnerable Versions:

22.0.5 (Build 63914)

Timeline

Official Publish: April 20th, 2023

Last Modified: April 21st, 2026

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1078 Valid Accounts

T1556 Modify Authentication Process

Credential Access