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Qsync Central Buffer Overflow Vulnerability Allowing Memory Modification or Process Crashes

Vulnerability

A buffer overflow vulnerability has been identified in Qsync Central versions 5.0.x. This vulnerability allows remote attackers with user account access to exploit the issue, potentially leading to unauthorized memory modification or process crashes.

Impact

Exploitation of this vulnerability could result in memory corruption or process termination.

Remediation

Users are advised to update Qsync Central to version 5.0.0.4 or later. Instructions for updating Qsync Central are available on the QNAP website.

Added: Feb 11, 2026, 1:40 PM
Updated: Feb 11, 2026, 5:21 PM

Vulnerability Rating

Custom Algorithm
spread
6.2
impact
3.1
exploitability
6.6
remediation
0.0
relevance
3.0
threat
0.0
urgency
2.9
incentive
0.0

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.