PaperCut MF/NG Improper Access Control Vulnerability

Critical Threat Advisory: This vulnerability is documented in active Ransomware campaigns. Immediate remediation required.

Technical Severity

CVSS v3.1 Metrics

CRITICAL

9.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

94.26 %

Predictive Probability

Percentile Rank

99.9 th

Documented as more likely to be exploited than 99.9% of known CVEs.

Detection Date

Apr 21, 2023

Remediation Due

May 12, 2023

CISA Catalog Active

Threat Analysis

PaperCut MF/NG contains an improper access control vulnerability within the SetupCompleted class that allows authentication bypass and code execution in the context of system.

Remediation Directive

Apply updates per vendor instructions.

Asset Context

Vendor Identity

PaperCut

Affected Product

MF/NG

Ransomware Status

Campaign Use Known

Weakness Classification

CWE-284

External Intelligence

https://www.papercut.com/kb/Main/PO-1216-and-PO-1219

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2023-27350