CVE-2020-24557Actively exploitedAdded to KEV 2021-11-03

Trend Micro Multiple Products Improper Access Control Vulnerability

Trend Micro, Apex One, OfficeScan, and Worry-Free Business Security

Description

Trend Micro Apex One, OfficeScan, and Worry-Free Business Security on Microsoft Windows contain an improper access control vulnerability that may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function, and attain privilege escalation.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

Medium

2.7%

estimated chance of real-world exploitation in the next 30 days, higher than 85.7% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2022-05-03

Talk to us about this

Penetration Testing

Confirm whether this vulnerability class is actually exploitable in your environment.

Security Engineering

Get help implementing the required action and closing the gap.

Our guide to vulnerability management and patch prioritization

View on CISA's KEV catalog View on NVD

Not sure if this affects you?

We help organizations confirm real exposure and prioritize what actually needs fixing first.

Request a Security Assessment Browse Services