CVE-2025-33033: qnap systems inc. qsync central Path Traversal

Vulnerability summary

CVE-2025-33033 is a high (CVSS 7.2) Path Traversal vulnerability in qnap systems inc. qsync central. EPSS estimates a 0.49% chance of exploitation in the next 30 days, higher than 40.7% of scored vulnerabilities.

Timeline

1. 29-08-2025
   PublishedVulnerability first disclosed.
2. 29-08-2025
   Last modifiedVulnerability information updated.

Description

A path traversal vulnerability has been reported to affect Qsync Central. 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: Qsync Central 4.5.0.7 ( 2025/04/23 ) and later

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.