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    CVE-2025-62841

    An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.0.521 and later Hybrid Backup Sync 26.4.1.563 and later

    Published:Oct 29, 2026
    Last Modified:Oct 30, 2026
    EPS:Oct 29, 2026
    EPSS Score:0.00245
    CVSS Score:8.7

    Affected Products

    Vendor
    Qnap
    Product
    Hybrid Backup Sync
    Vendor
    Qnap Systems
    Product
    Hbs 3 Hybrid Backup Sync
    Vendor
    Qnap Systems Inc.
    Product
    Hbs 3 Hybrid Backup Sync

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-62839 (CVSS 8.7) — An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and …
    CVE-2025-62842 (CVSS 7) — An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. I…
    CVE-2025-62840 (CVSS 7) — A generation of error message containing sensitive information vulnerability has been reported to affect HBS 3…
    CVE-2024-53695 (CVSS 6.3) — A buffer overflow vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulner…
    CVE-2024-50388 (CVSS 9.5) — An OS command injection vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the …
    CVE-2021-28809 (CVSS 9.8) — An improper access control vulnerability has been reported to affect certain legacy versions of HBS 3. If expl…
    CVE-2021-28799 (CVSS 10) — An improper authorization vulnerability has been reported to affect QNAP NAS running HBS 3 (Hybrid Backup Sync…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High