CVE-2021-23139: Trend Micro Apex One

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

A null pointer vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 could allow an attacker to crash the CGI program on affected installations.

Affected products

• Trend Micro Apex One: version 2019 only
• Trend Micro Worry-Free Business Security: version 10.0 only
• Trend Micro Worry-Free Business Security Services: affected versions not specified

Published 2021-10-21. Last modified 2026-06-17.