Vulnerability · Published Jan 2, 2026 · Assigned by qnap
CVE-2025-62842HBS 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 0.3% (higher than 19% of all known vulnerabilities).
Official 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
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-73 · 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