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
Published: 2026-10-29
Score: 8.7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

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

Tracking

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Advisories

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History

Thu, 29 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 29 Oct 2026 07:45:00 +0000

Type Values Removed Values Added
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
Title Hard-coded Cryptographic Key #1
Weaknesses CWE-321
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: qnap

Published:

Updated: 2026-10-29T14:17:58.115Z

Reserved: 2025-10-24T02:43:45.371Z

Link: CVE-2025-62839

cve-icon Vulnrichment

Updated: 2026-10-29T14:17:53.564Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-29T08:16:59.863

Modified: 2026-10-29T15:17:14.150

Link: CVE-2025-62839

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T09:00:16Z

Weaknesses