CVE Intelligence

Qnap Hybrid Backup Sync vulnerabilities

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Published CVEs affecting Qnap Hybrid Backup Sync: 3 record(s), with affected versions and fixes.
cpe:2.3:a:qnap:hybrid_backup_sync

CVE-2025-62842 High · 7.8 CWE-73 Jan 2, 2026
HBS 3 Hybrid Backup Sync
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
CVE-2025-62840 Low · 3.3 CWE-209 Jan 2, 2026
HBS 3 Hybrid Backup Sync
A generation of error message containing sensitive information 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 application data. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later
CVE-2021-28799 Critical · 9.8 KEV Urgent · 77 Public exploit Ransomware CWE-285 May 13, 2021
QNAP NAS Improper Authorization Vulnerability
An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync. ) If exploited, the vulnerability allows remote attackers to log in to a device. This issue affects: QNAP Systems Inc. HBS 3 versions prior to v16.0.0415 on QTS 4.5.2; versions prior to v3.0.210412 on QTS 4.3.6; versions prior to v3.0.210411 on QTS 4.3.4; versions prior to v3.0.210411 on QTS 4.3.3; versions prior to v16.0.0419 on QuTS hero h4.5.1; versions prior to v16.0.0419 on QuTScloud c4.5.1~c4.5.4. This issue does not affect: QNAP Systems Inc. HBS 2 . QNAP Systems Inc. HBS 1.3 .