Vulnerability · Published Jan 2, 2026 · Assigned by qnap
CVE-2025-62840HBS 3 Hybrid Backup Sync
High 7.0
In plain English
A high-severity security flaw in HBS 3 Hybrid Backup Sync from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Official description
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
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| QNAP Systems Inc. | HBS 3 Hybrid Backup Sync | 26.1.x – before 26.2.0.938 |
Weakness: CWE-209 · 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