CVE-2026-39997: CWE-306 in QNAP Systems Inc. HybridDesk Station
Description
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
CVSS v4.0
Score 8.9high
Affected software
QNAP Systems Inc.
HybridDesk Station
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-39997 is a missing authentication vulnerability (CWE-306) in QNAP HybridDesk Station that permits remote attackers to access critical functions without proper authentication. The vulnerability affects versions >=4.2.x and <4.2.22. It has a CVSS 4.0 score of 8.9, indicating high severity with attack vector as adjacent network, low attack complexity, and partial user interaction required. The vendor has released a fix in version 4.2.22.
Potential Impact
Exploitation of this vulnerability could allow remote attackers to bypass authentication controls and gain unauthorized access to critical system functions on affected HybridDesk Station versions. This could lead to compromise of system integrity and confidentiality.
Mitigation Recommendations
Upgrade HybridDesk Station to version 4.2.22 or later, where this vulnerability has been fixed. No other mitigation is indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qnap
- Date Reserved
- 2026-04-08T02:30:26.921Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad0a18d2cdf04f65621d7ac
Added to database: 10/15/2026, 09:49:01 UTC
Last enriched: 10/15/2026, 10:03:41 UTC
Last updated: 10/15/2026, 19:00:27 UTC
Views: 16
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