CVE-2020-28187: TerraMaster Tos

Critical severity, CVSS 9.8. EPSS: 16.4% chance of exploitation in the next 30 days.

Multiple directory traversal vulnerabilities in TerraMaster TOS <= 4.2.06 allow remote authenticated attackers to read, edit or delete any file within the filesystem via the (1) filename parameter to /tos/index.php?editor/fileGet, Event parameter to /include/ajax/logtable.php, or opt parameter to /include/core/index.php.

Affected products

• TerraMaster Tos: up to and including 4.2.06

Published 2020-12-24. Last modified 2026-06-17.