CVE-2021-28645: Trend Micro Apex One

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

An incorrect permission assignment vulnerability in Trend Micro Apex One, Apex One as a Service and OfficeScan XG SP1 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

Published 2021-04-13. Last modified 2026-06-17.