CVE-2024-53695: QNAP Hybrid Backup Sync

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

A buffer overflow vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to modify memory or crash processes. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.4.952 and later

Affected products

• QNAP Hybrid Backup Sync: from 25.1.0.627, before 25.1.4.952 (fixed in 25.1.4.952)

Published 2025-03-07. Last modified 2026-06-17.