---
id: CVE-2026-39993
title: >-
  A relative path traversal vulnerability has been reported to affect Download
  Station
summary: >-
  A relative path traversal vulnerability has been reported to affect Download
  Station. If a remote attacker gains a user account, they can then exploit the
  vulnerability to read the contents of unexpected files or system data.


  We have al…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-23
vendor: QNAP Systems Inc.
product: Download Station
affected:
  - download_station >= 5.10.x < 5.10.2.313
  - download_station >= 5.11.x < 5.11.3.322
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T08:16:37.903'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39993'
references:
  - url: >-
      https://www.qnap.com/en/app_releasenotes/list.php?app_choose=DownloadStation
    label: security@qnapsecurity.com.tw
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-15T07:57:27.849Z'
---

## Overview

A relative path traversal vulnerability has been reported to affect Download Station. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.

We have already fixed the vulnerability in the following version:
Download Station 5.10.2.313 and later
Download Station 5.11.3.322 and later

## Remediation

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