---
id: CVE-2026-82077
title: >-
  An improper limitation of a pathname to a restricted directory (path
  traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and
  PaperCut MF allows an authenticated administrator to execute arbitrary
  commands on the underlyi…
summary: >-
  An improper limitation of a pathname to a restricted directory (path
  traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and
  PaperCut MF allows an authenticated administrator to execute arbitrary
  commands on the underlyi…
severity: high
cvss: 7.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P'
cwe:
  - CWE-22
  - CWE-78
vendor: PaperCut
product: PaperCut NG/MF
affected:
  - ng_mf < 25.0.13
  - ng_mf >= 26.0.0 < 26.0.5
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T13:17:11.850'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82077'
references:
  - url: 'https://www.papercut.com/kb/Main/security-bulletin-sep-2026/'
    label: eb41dac7-0af8-4f84-9f6d-0272772514f4
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-24T12:45:25.059939Z'
cvssSource: cna
ingestedAt: '2026-09-24T08:40:12.061Z'
---

## Overview

An improper limitation of a pathname to a restricted directory (path traversal) vulnerability in the Scan-to-Fax component of PaperCut NG and PaperCut MF allows an authenticated administrator to execute arbitrary commands on the underlying host via crafted fax provider settings.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.