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TI-2025-38994 Aliases CVE-2025-62840GHSA-fxxr-j78f-xmmm

Information disclosure through error messages in QNAP HBS 3 Hybrid Backup Sync

Priority LOW 32CWE-209Published · Updated

Key facts

Attack vector
Physical
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-209.

Summary

A generation of error message containing sensitive information 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 application data. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 26.2.0.938 and later

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00241 15th percentileScored 2026-11-07
Fix Fixed HBS 3 Hybrid Backup Sync (QNAP Systems Inc.): 26.2.0.938

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPHBS 3 Hybrid Backup Sync26.1.x to before 26.2.0.93826.2.0.938Patch availableCNA
  • HBS 3 Hybrid Backup Sync VendorQNAP Affected 26.1.x to before 26.2.0.938 Fixed in 26.2.0.938 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*before 26.2.0.938VulnerableQNAP
  • cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:* Versions before 26.2.0.938 Vulnerable ·QNAP

Remediation

  • Fix · CNA HBS 3 Hybrid Backup Sync (QNAP Systems Inc.) Fixed in 26.2.0.938

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    QNAP Systems HBS 3 Hybrid Backup Sync 26.2.0.938

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2025-38995 An external control of file name or path vulnerability has been reported to affect HBS 3…Priority LOW 32
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-62840
  2. 2026-10-03 Alias added: GHSA-fxxr-j78f-xmmm

References

Advisory 1

  • TI-2021-09791 Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync) KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-09800 Missing Authentication for Critical Function in RTRR Server in HBS3 CVSS 3.1CRITICAL 9.8
  • TI-2024-33823 Command injection in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0CRITICAL 9.5
  • TI-2025-38995 An external control of file name or path vulnerability has been reported to affect HBS 3… CVSS 4.0HIGH 7.0
  • TI-2024-35893 Buffer overflow in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0MEDIUM 6.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences