EUVD Vulnerability Catalog Actively Exploited (KEV)

EUVD-2026-67713

Severity: HIGH Base Score: 8.8 CVSS Version: 4.0

Vulnerability Description

An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Attack Requirements (AT): None

▪ Privileges Required (PR): None

▪ User Interaction (UI): None

▪ Vulnerability Confidentiality Impact (VC): Low

▪ Vulnerability Integrity Impact (VI): High

▪ Vulnerability Availability Impact (VA): Low

▪ Subsequent Confidentiality Impact (SC): None

▪ Subsequent Integrity Impact (SI): None

▪ Subsequent Availability Impact (SA): None

Affected Vendors & Systems

Vendor PaperCut

References & Advisory Links

https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

PaperCut

EPSS Probability

0.39

Known Aliases

GHSA-44wc-j6f2-7fjr CVE-2026-81578

Published On

2026-08-28

Last Updated

2026-08-31

Exploited Since

2026-08-31