CVE-2019-18187: Trend Micro OfficeScan Directory Traversal Vulnerability

High severity, CVSS 7.5. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 25.1% chance of exploitation in the next 30 days.

Trend Micro OfficeScan versions 11.0 and XG (12.0) could be exploited by an attacker utilizing a directory traversal vulnerability to extract files from an arbitrary zip file to a specific folder on the OfficeScan server, which could potentially lead to remote code execution (RCE). The remote process execution is bound to a web service account, which depending on the web platform used may have restricted permissions. An attempted attack requires user authentication.

Affected products

• Trend Micro OfficeScan: version 11.0 only; version xg only

Published 2019-10-28. Last modified 2026-06-17.