CVE-2025-66592CWE-346

CVE-2025-66592

Medium · published May 27, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
0.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.00086 · 0.3th percentile
Weakness
CWE-346 · Origin Validation Error
Published
2026-05-27T13:16Z
Affected products (1)
ProductVersionsFixed in
synology/active_backup_for_business_agent< 3.1.0-49673.1.0-4967
References (1)
https://www.synology.com/en-global/security/advisory/Synology_SA_25_16 · [email protected]
EPSS history
Timeline
  • 27 MAY 08:43Z
    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…
    cvelistv5