Multiple Trend Micro Products CVE-2019-18189 Unspecified Directory Traversal Vulnerability



Date Discovered

October 28, 2019


Multiple Trend Micro products are prone to an unspecified directory-traversal vulnerability. Remote attackers can use specially crafted requests with directory-traversal sequences ('../') to access arbitrary files that contain sensitive information. This may aid in further attacks. The following products are affected : Apex One (on premise) all versions prior to CP 2049 Trend Micro OfficeScan XG SP1, XG, 11.0 SP1 Trend Micro Worry-Free Business Security 10.0 SP1, 10.0, 9.5

Technologies Affected

  • Trend Micro Apex One (on premise)
  • Trend Micro OfficeScan 11.0 SP1
  • Trend Micro OfficeScan XG
  • Trend Micro OfficeScan XG SP1
  • Trend Micro Worry-Free Business Security 10.0
  • Trend Micro Worry-Free Business Security 10.0 SP1
  • Trend Micro Worry-Free Business Security 9.5


Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn't needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
When possible, run client software as regular user accounts with limited access to system resources. This may limit the immediate consequences of client-side vulnerabilities.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Updates are available. Please see the references or vendor advisory for more information.



Trend Micro Research

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