CVE-2026-39993: CWE-23 in QNAP Systems Inc. Download Station
Description
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
CVSS v4.0
Score 8.7high
Affected software
QNAP Systems Inc.
Download Station
pkg:github/qnap/download-stationRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-23) in QNAP Download Station allows a remote attacker who has obtained a user account to perform a relative path traversal attack. This enables the attacker to read contents of files that should be inaccessible, potentially exposing sensitive system information. The issue affects versions prior to 5.10.2.313 and 5.11.3.322, with patches available in those versions and later.
Potential Impact
An attacker with a valid user account can exploit this vulnerability to read arbitrary files on the system, which may lead to disclosure of sensitive information. There is no indication of remote code execution or privilege escalation. The CVSS 4.0 base score is 6.3, indicating a medium severity impact.
Mitigation Recommendations
The vulnerability has been fixed in Download Station versions 5.10.2.313 and later, and 5.11.3.322 and later. Users should upgrade to these versions or later to remediate the issue. No additional mitigation steps are indicated by the vendor.
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: 6ad07e722cdf04f65612bc1e
Added to database: 10/15/2026, 07:19:14 UTC
Last enriched: 10/15/2026, 07:33:19 UTC
Last updated: 10/15/2026, 19:00:27 UTC
Views: 19
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