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TI-2024-35893 Aliases CVE-2024-53695GHSA-56j5-vwwf-v97g

Buffer overflow in QNAP HBS 3 Hybrid Backup Sync

Priority LOW 29CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
—
Confidentiality · integrity · availability
None · Low · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A buffer overflow vulnerability has been reported to affect HBS 3 Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to modify memory or crash processes. We have already fixed the vulnerability in the following version: HBS 3 Hybrid Backup Sync 25.1.4.952 and later

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00523 44th percentileScored 2026-11-07
Fix Fixed HBS 3 Hybrid Backup Sync (QNAP Systems Inc.): 25.1.4.952

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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 Sync25.1.x to before 25.1.4.95225.1.4.952Patch availableCNA
  • HBS 3 Hybrid Backup Sync VendorQNAP Affected 25.1.x to before 25.1.4.952 Fixed in 25.1.4.952 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:*25.1.0.627 to before 25.1.4.952VulnerableQNAP
  • cpe:2.3:a:qnap:hybrid_backup_sync:*:*:*:*:*:*:*:* Versions 25.1.0.627 to before 25.1.4.952 Vulnerable ·QNAP

Remediation

  • Fix · CNA HBS 3 Hybrid Backup Sync (QNAP Systems Inc.) Fixed in 25.1.4.952

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-53695
  2. 2026-10-03 Alias added: GHSA-56j5-vwwf-v97g

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-2025-38994 Information disclosure through error messages in QNAP HBS 3 Hybrid Backup Sync CVSS 4.0HIGH 7.0

Sources

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