---
id: CVE-2025-70819
title: >-
  Zettlab D6 Ultra before 1.7.0 allows mounting /etc/passwd and /etc/shadow in a
  container via ".." manipulations such as volumes: -
  ../../../../../../../etc:/h_etc:rw in a compose file.
summary: >-
  Zettlab D6 Ultra before 1.7.0 allows mounting /etc/passwd and /etc/shadow in a
  container via ".." manipulations such as volumes: -
  ../../../../../../../etc:/h_etc:rw in a compose file.
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-24
vendor: Zettlab
product: D6 Ultra
affected:
  - d6_ultra < 1.7.0
published: '2026-09-13'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T20:00:03.713'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-70819'
references:
  - url: 'https://www.xda-developers.com/nas-wouldnt-give-ssh-access-hacked-into/'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
epss: 0.00106
epssPercentile: 0.00999
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T15:54:15.488601Z'
ingestedAt: '2026-09-14T15:23:07.469Z'
---

## Overview

Zettlab D6 Ultra before 1.7.0 allows mounting /etc/passwd and /etc/shadow in a container via ".." manipulations such as volumes: - ../../../../../../../etc:/h_etc:rw in a compose file.

## Remediation

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