Relative Path Traversal Vulnerability in Download Station by QNAP
CVE-2026-39993

8.7HIGH

Key Information:

Vendor

QNAP
Status
Download Station
Vendor
CVE Published:
15 October 2026

What is CVE-2026-39993?

A relative path traversal vulnerability affects Download Station, allowing potential attackers with user account access to exploit the flaw. This vulnerability can enable unauthorized reading of sensitive files or system data, posing significant security risks. Users are advised to upgrade to Download Station version 5.10.2.313 or later, or version 5.11.3.322 or later, which include the necessary patches to mitigate this issue.

Affected Version(s)

Download Station 5.10.x < 5.10.2.313

Download Station 5.11.x < 5.11.3.322

References

https://www.qnap.com/en/app_releasenotes/list.php?app_cho...
release-notes

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Joey Tang
.