Synology-SA-25:16 Synology Active Backup for Business Agent
Publish Time: UTC+8
Last Updated: UTC+8
- Severity
- Moderate
- Status
- Resolved
Abstract
Synology has released a security update for the Active Backup for Business Agent on Windows to address a vulnerability :
- CVE-2025-66592 allows local users to write arbitrary files with restricted content.
Please refer to the 'Affected Products' table for the corresponding updates.
Affected Products
| Product | Severity | Fixed Release Availability |
|---|---|---|
| Synology Active Backup for Business Agent | Moderate | Upgrade to 3.1.0-4967 or above. |
Mitigation
None
Detail
- CVE-2025-66592
- Severity: Moderate
- CVSS3 Base Score: 6.1
- CVSS3 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
- CWE-346: Origin Validation Error
- An origin validation error vulnerability in Synology Active Backup for Business Agent before 3.1.0-4967 allows local users to write arbitrary files with restricted content during installation.
Acknowledgement
Sheikh Rishad (https://x.com/sheikhrishad0)
Reference
Revision
| Revision | Date | Description |
|---|---|---|
| 1 | 2025-12-08 | Initial public release. |
| 2 | 2026-05-27 | Disclosed vulnerability details. |