CVE-2020-24557: Trend Micro Multiple Products Improper Access Control Vulnerability

Vulnerability summary

CVE-2020-24557 is a high (CVSS 7.8) vulnerability in Trend Micro Apex One, OfficeScan, and Worry-Free Business Security. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 2.67% chance of exploitation in the next 30 days, higher than 85.5% of scored vulnerabilities.

Timeline

1. 01-09-2020
   PublishedVulnerability first disclosed.
2. 03-11-2021
   Added to CISA KEVTrend Micro Multiple Products Improper Access Control Vulnerability
3. 03-05-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

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.

No weakness data has been published for this record.