---
id: CVE-2026-39997
title: >-
  A missing authentication for critical function vulnerability has been reported
  to affect HybridDesk Station
summary: >-
  A missing authentication for critical function vulnerability has been reported
  to affect HybridDesk Station. If exploited, the vulnerability could allow
  remote attackers to gain access to the system.


  We have already fixed the vulnerabil…
severity: high
cvss: 8.9
cvssVector: 'CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cwe:
  - CWE-306
vendor: QNAP Systems Inc.
product: HybridDesk Station
affected:
  - hybriddesk_station >= 4.2.x < 4.2.22
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T16:32:39.893'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39997'
references:
  - url: >-
      https://www.qnap.com/en/app-release-notes?keyword=HybridDesk%20Station&app=HD_Station&product-line=nas
    label: security@qnapsecurity.com.tw
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-15T13:31:32.504365Z'
cvssSource: cna
ingestedAt: '2026-10-15T09:59:33.285Z'
epss: 0.00242
epssPercentile: 0.1531
---

## Overview

A missing authentication for critical function vulnerability has been reported to affect HybridDesk Station. If exploited, the vulnerability could allow remote attackers to gain access to the system.

We have already fixed the vulnerability in the following version:
HybridDesk Station 4.2.22 and later

## Remediation

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