CVE-2025-66592: Origin Validation Error in Synology Synology Active Backup for Business Agent
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.
AI Analysis
Technical Summary
This vulnerability arises from an origin validation error in Synology Active Backup for Business Agent prior to version 3.1.0-4967. It permits local users to write arbitrary files containing restricted content during installation, potentially leading to integrity and availability issues. The CVSS 3.1 base score is 6.1, reflecting medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality impact, low integrity impact, and high availability impact. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Exploitation of this vulnerability allows local users to write arbitrary files with restricted content during installation, which can compromise system integrity and availability. There is no impact on confidentiality. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to systems running vulnerable versions and monitor installation processes for unauthorized file modifications.
CVE-2025-66592: Origin Validation Error in Synology Synology Active Backup for Business Agent
Description
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.
CVSS v3.1
Score 6.1medium
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from an origin validation error in Synology Active Backup for Business Agent prior to version 3.1.0-4967. It permits local users to write arbitrary files containing restricted content during installation, potentially leading to integrity and availability issues. The CVSS 3.1 base score is 6.1, reflecting medium severity with local attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, no confidentiality impact, low integrity impact, and high availability impact. No vendor advisory or patch information is currently available to confirm remediation status.
Potential Impact
Exploitation of this vulnerability allows local users to write arbitrary files with restricted content during installation, which can compromise system integrity and availability. There is no impact on confidentiality. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict local user access to systems running vulnerable versions and monitor installation processes for unauthorized file modifications.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- synology
- Date Reserved
- 2025-12-05T03:19:16.760Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a16b387e29bf47b50abe5d3
Added to database: 5/27/2026, 9:04:07 AM
Last enriched: 5/27/2026, 9:34:11 AM
Last updated: 5/29/2026, 1:45:36 PM
Views: 26
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