CVE-2021-44020: Trend Micro Worry-Free Business Security

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

An unnecessary privilege vulnerability in Trend Micro Worry-Free Business Security 10.0 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. This vulnerability is similar to but not identical to CVE-2021-44019 and 44021.

Affected products

• Trend Micro Worry-Free Business Security: version 10.0 only

Published 2021-12-03. Last modified 2026-06-17.