CVE-2025-33034: QNAP Qsync Central

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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 5.0.0.1 ( 2025/07/09 ) and later

Affected products

• QNAP Qsync Central: from 4.2.0.0, before 5.0.0.1 (fixed in 5.0.0.1)

Published 2025-10-03. Last modified 2026-06-17.