CVE-2025-66592: Medium severity Synology Active Backup for Business Agent vulnerability
Published May 27, 2026
·Updated
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 and conduct denial-of-service during installation.
Affected Software
2 affected components
Synology Active Backup for Business Agent<3.1.0-4967
Synology Active Backup for Business Agent<3.1.0-4967
Event History
May 27, 2026
CVE Published
via MITRE·08:43 AM
Data Sourced
via MITRE·08:43 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·09:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-66592?
CVE-2025-66592 has a medium severity score of 6.1.
2
What type of vulnerability is CVE-2025-66592?
CVE-2025-66592 is an origin validation error vulnerability that allows local users to write arbitrary files.
3
How do I fix CVE-2025-66592?
To fix CVE-2025-66592, upgrade Synology Active Backup for Business Agent to version 3.1.0-4967 or later.
4
Who is affected by CVE-2025-66592?
CVE-2025-66592 affects local users of Synology Active Backup for Business Agent versions prior to 3.1.0-4967.
5
What can an attacker do with CVE-2025-66592?
An attacker can exploit CVE-2025-66592 to write arbitrary files with restricted content during installation.