CVE-2026-39993

Path Traversal to Root RCE in QNAP Download Station via Addon/Search addon Parameter

State: Published
Severity: 8.7 High
Published: Oct 15, 2026
Updated: Oct 15, 2026
Reserved: Apr 8, 2026

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

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	qnap

Weaknesses

CWE-23

Affected Products

Product	Versions
Download StationQNAP Systems Inc.	5.10.x to before 5.10.2.313Affected 5.11.x to before 5.11.3.322Affected

References

https://www.qnap.com/en/app_releasenotes/list.php?app_choose=DownloadStationrelease-notes

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