CVE-2025-62841 PUBLISHED

Hard-coded Cryptographic Key #2

Assigner: qnap
Reserved: 24.10.2025 Published: 29.10.2026 Updated: 29.10.2026

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

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Adjacent	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	QNAP Systems Inc.
Product	HBS 3 Hybrid Backup Sync
Versions	Default: unaffected affected from 26.4.x to 26.4.0.521 (excl.)

Vendor	QNAP Systems Inc.
Product	Hybrid Backup Sync
Versions	Default: unaffected affected from 26.4.x to 26.4.0.521 (excl.) affected from 26.4.x to 26.4.1.563 (excl.)

Solutions

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

Credits

Team DDOS finder

References

Problem Types

CWE-321 CWE

Impacts

CAPEC-191