# QNAP Hybrid Backup Sync vulnerabilities

Source: https://junglewise.ai/threats/technologies/hybrid-backup-sync  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/hybrid-backup-sync.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in QNAP Hybrid Backup Sync: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2025-62841, was published on 29 October 2026. 2 vulnerabilities in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 2
- Last 90 days: 2
- All time: 4 (0 critical, 0 exploited in the wild)

## About QNAP Hybrid Backup Sync

QNAP software for backup and synchronization of data across local and cloud storage.

## Latest QNAP Hybrid Backup Sync vulnerabilities

- [CVE-2025-62841: QNAP Hybrid Backup Sync hard-coded cryptographic key](https://junglewise.ai/threats/cve-2025-62841-an-use-of-hard-coded-cryptographic-key-vulnerability-has-been) (info, published 29 Oct 2026)
- [CVE-2025-62839: QNAP Hybrid Backup Sync hard-coded cryptographic key](https://junglewise.ai/threats/cve-2025-62839-an-use-of-hard-coded-cryptographic-key-vulnerability-has-been) (info, published 29 Oct 2026)
- [CVE-2025-62842: QNAP HBS 3 Hybrid Backup Sync path traversal](https://junglewise.ai/threats/cve-2025-62842-qnap-hbs-3-hybrid-backup-sync-path-traversal) (high, CVSS 7.8, published 2 Jan 2026)
- [CVE-2025-62840: A generation of error message containing sensitive information vulnerability has been reported to affect HBS 3 Hybrid…](https://junglewise.ai/threats/cve-2025-62840-a-generation-of-error-message-containing-sensitive-information) (low, CVSS 3.3, published 2 Jan 2026)

## Most severe QNAP Hybrid Backup Sync vulnerabilities

- [CVE-2025-62842: QNAP HBS 3 Hybrid Backup Sync path traversal](https://junglewise.ai/threats/cve-2025-62842-qnap-hbs-3-hybrid-backup-sync-path-traversal) (high, CVSS 7.8, published 2 Jan 2026)
- [CVE-2025-62840: A generation of error message containing sensitive information vulnerability has been reported to affect HBS 3 Hybrid…](https://junglewise.ai/threats/cve-2025-62840-a-generation-of-error-message-containing-sensitive-information) (low, CVSS 3.3, published 2 Jan 2026)
- [CVE-2025-62841: QNAP Hybrid Backup Sync hard-coded cryptographic key](https://junglewise.ai/threats/cve-2025-62841-an-use-of-hard-coded-cryptographic-key-vulnerability-has-been) (info, published 29 Oct 2026)
- [CVE-2025-62839: QNAP Hybrid Backup Sync hard-coded cryptographic key](https://junglewise.ai/threats/cve-2025-62839-an-use-of-hard-coded-cryptographic-key-vulnerability-has-been) (info, published 29 Oct 2026)

## Vulnerabilities per week

2 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 2 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other QNAP technologies

- [QNAP QTS](https://junglewise.ai/threats/technologies/qts): 37 vulnerabilities
- [QNAP Quts Hero](https://junglewise.ai/threats/technologies/qnap-quts-hero): 24 vulnerabilities
- [QNAP File Station](https://junglewise.ai/threats/technologies/file-station): 14 vulnerabilities
- [QNAP Video Station](https://junglewise.ai/threats/technologies/video-station): 6 vulnerabilities
- [QNAP Network Attached Storage (NAS)](https://junglewise.ai/threats/technologies/network-attached-storage-nas): 5 vulnerabilities
- [QNAP Photo Station](https://junglewise.ai/threats/technologies/photo-station): 4 vulnerabilities
- [QNAP Qsync Central](https://junglewise.ai/threats/technologies/qsync-central): 4 vulnerabilities
- [QNAP License Center](https://junglewise.ai/threats/technologies/license-center): 3 vulnerabilities
- [QNAP File Station 5](https://junglewise.ai/threats/technologies/qnap-file-station-5): 3 vulnerabilities
- [QNAP Qumagie](https://junglewise.ai/threats/technologies/qnap-qumagie): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "QNAP Hybrid Backup Sync vulnerabilities", https://junglewise.ai/threats/technologies/hybrid-backup-sync, 9 November 2026.