CVE-2025-62842: QNAP Hybrid Backup Sync

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If an attacker gains local network access, they can then exploit the vulnerability to read or modify files or directories. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later

Affected products

• QNAP Hybrid Backup Sync: before 26.2.0.938 (fixed in 26.2.0.938)

Published 2026-01-02. Last modified 2026-07-25.