CVE-2020-35665: TerraMaster Operating System

Critical severity, CVSS 9.8. EPSS: 78.5% chance of exploitation in the next 30 days.

An unauthenticated command-execution vulnerability exists in TerraMaster TOS through 4.2.06 via shell metacharacters in the Event parameter in include/makecvs.php during CSV creation.

Affected products

• TerraMaster TerraMaster Operating System: up to and including 4.2.06

Published 2020-12-23. Last modified 2026-06-17.