Medium6.1Synology Updated
Active Backup: origin validation error vulnerability in Synology Active Backup for Business Agent before 3.1.0-4967 allows local users to w…
Synology-SA-25:16 Published May 27, 2026Updated by vendor Jun 17, 2026
CVE-2025-66592
Affected products & platforms
SynologyUnclassified
Summary
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 versions
- 3.1.0-4967
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
- 3.1.0-4967
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Upgrade the affected Synology product to a fixed release: 3.1.0-4967.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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