CVE-2025-62841
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Hard-Coded Cryptographic Key in HBS 3 Hybrid Backup Sync
Vulnerability report for CVE-2025-62841, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-29
Last updated on: 2026-10-29
Assigner: QNAP Systems, Inc.
Description
Description
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
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| QNAP Systems Inc. | HBS 3 Hybrid Backup Sync | 26.4.x |
| QNAP Systems Inc. | Hybrid Backup Sync | 26.4.x |
| QNAP Systems Inc. | Hybrid Backup Sync | 26.4.x |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-321 | The product uses a hard-coded, unchangeable cryptographic key. |
