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Vulnerability Intelligence Report
Trend Micro Multiple Products Improper Access Control Vulnerability

CVE-2020-24557

A vulnerability in Trend Micro Apex One and Worry-Free Business Security 10.0 SP1 on Microsoft Windows may allow an attacker to manipulate a particular product folder to disable the security temporarily, abuse a specific Windows function and attain privilege escalation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. Please note that version 1909 (OS Build 18363.719) of Microsoft Windows 10 mitigates hard links, but previous versions are affected.

CISA KEV SSVC: Active Exploitation
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:2.64%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
Authentication
Weaponization
SSVC Action

Affected Products & Versions

Vendor Product Affected Versions
Trend Micro Trend Micro Apex One 2009 (on premise), SaaS (affected)
Trend Micro Trend Micro Worry-Free Business Security 10.0 SP1 (affected)

References & Technical Advisories

No reference links found.

Threat Intelligence Signals

CISA KEV
ACTIVE IN CATALOG
EPSS Score
2.639%

Identity & Timeline

StatusPUBLISHED
Assigning AuthorityTrend Micro, Inc. · Vendor · Japan
Reserved2020-08-20T00:00:00
Published2020-09-01T18:55:27
Last Updated2025-10-21T23:35:37

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