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01 Record

CVE-2025-62841

Hard-coded Cryptographic Key #2

HighPUBLISHEDCNA: qnap
CNA base score8.7 CVSS v4.0CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

02 Description

Hard-coded Cryptographic Key #2

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
8.7 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-29.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-29 07:40Z7 HR AGO
Last updated
2026-10-29 14:16Z35 MIN AGO
Reserved
2025-10-24
Assigning CNA
qnap
Record state
PUBLISHED
Severity
High (CVSS 8.7)
CNA 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
Weaknesses
  • CWE-321Use of Hard-coded Cryptographic KeyVariant
Data version
5.2
Document digest
d7a6ee3a8ef2bc3b913ff2ecf8e9a37b6b5c405e2b25791426293d588e915404

05 Affected products

VendorProductVersionsPlatforms
QNAP Systems Inc.HBS 3 Hybrid Backup Sync26.4.x to < 26.4.0.521—
QNAP Systems Inc.Hybrid Backup Sync26.4.x to < 26.4.0.521, 26.4.x to < 26.4.1.563—

06 References

07 Remediation

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