A path traversal vulnerability has been reported to affect several product versions. If a local 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 versions: Qfinder Pro Mac 7.13.0 and later Qsync for Mac 5.1.5 and later QVPN Device Client for Mac 2.2.8 and later

An SQL injection vulnerability has been reported to affect Qsync Central. If exploited, the vulnerability could allow remote attackers who have gained user access to execute unauthorized code or commands.

We have already fixed the vulnerability in the following version: Qsync Central 4.5.0.6 ( 2025/03/20 ) and later

A time-of-check time-of-use (TOCTOU) race condition vulnerability has been reported to affect several product versions. If exploited, the vulnerability could allow local attackers who have gained user access to gain access to otherwise unauthorized resources.

We have already fixed the vulnerability in the following versions: QVPN Device Client for Mac 2.2.5 and later Qsync for Mac 5.1.3 and later Qfinder Pro Mac 7.11.1 and later

An incorrect permission assignment for critical resource vulnerability has been reported to affect Qsync Central. If exploited, the vulnerability could allow authenticated users to read or modify the resource via a network.

We have already fixed the vulnerability in the following versions: Qsync Central 4.4.0.15 ( 2024/01/04 ) and later Qsync Central 4.3.0.11 ( 2024/01/11 ) and later

A DLL Hijacking vulnerability in QNAP Qsync for Windows (exe) version 4.2.2.0724 and earlier could allow remote attackers to execute arbitrary code on Windows machines.