CVE-2017-12479: Kaseya Unitrends Backup

High severity, CVSS 8.8. EPSS: 11.8% chance of exploitation in the next 30 days.

It was discovered that an issue in the session logic in Unitrends Backup (UB) before 10.0.0 allowed using the LOGDIR environment variable during a web session to elevate an existing low-privilege user to root privileges. A remote attacker with existing low-privilege credentials could then execute arbitrary commands with root privileges.

Affected products

• Kaseya Unitrends Backup: up to and including 9.1

Published 2017-08-07. Last modified 2026-06-17.