CVE-2021-25249: Trend Micro Apex One

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

An out-of-bounds write information disclosure vulnerability in Trend Micro Apex One (on-prem and SaaS), OfficeScan XG SP1, and Worry-Free Business Security (10.0 SP1 and Services) could allow a local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Affected products

• Trend Micro Apex One: version 2019 only
• Trend Micro OfficeScan: version xg only
• Trend Micro Worry-Free Business Security: version 10.0 only

Published 2021-02-04. Last modified 2026-06-17.