An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If an attacker gains local network access, they can then exploit the vulnerability to read or modify files or directories.

We have already fixed the vulnerability in the following version:
HBS 3 Hybrid Backup Sync 26.2.0.938 and later

Attack Vector Physical

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00026.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
QNAP Systems Inc. HBS 3 Hybrid Backup Sync unaffected
Version Status Constraints
26.1.x affected < 26.2.0.938

Configuration 1 [-]

cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*

No data.

No data.

Project Subscriptions

Vendors Products
Qnap Subscribe
Hybrid Backup Sync Subscribe
Qnap Systems Inc. Subscribe
Hbs 3 Hybrid Backup Sync Subscribe
Advisories

No advisories yet.

Fixes

Solution

We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.qnap.com/en/security-advisory/qsa-25-46 cve-icon cve-icon
History

Thu, 05 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Qnap
Qnap hybrid Backup Sync
CPEs cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*
Vendors & Products Qnap
Qnap hybrid Backup Sync
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Tue, 06 Jan 2026 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Fri, 02 Jan 2026 16:00:00 +0000

Type Values Removed Values Added
Description An external control of file name or path vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If an attacker gains local network access, they can then exploit the vulnerability to read or modify files or directories. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later
Title HBS 3 Hybrid Backup Sync
First Time appeared Qnap Systems Inc.
Qnap Systems Inc. hbs 3 Hybrid Backup Sync
Weaknesses CWE-73
CPEs cpe:2.3:a:qnap_systems_inc.:hbs_3_hybrid_backup_sync:*:*:*:*:*:*:*:*
Vendors & Products Qnap Systems Inc.
Qnap Systems Inc. hbs 3 Hybrid Backup Sync
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: qnap

Published:

Updated: 2026-01-05T20:38:14.967Z

Reserved: 2025-10-24T02:43:45.372Z

Link: CVE-2025-62842

cve-icon Vulnrichment

Updated: 2026-01-05T20:31:32.068Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-02T16:17:00.710

Modified: 2026-02-05T19:03:30.353

Link: CVE-2025-62842

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses