Actively exploited in the wild
Trend Micro Multiple Products Improper Access Control Vulnerability
Trend Micro - Apex One, OfficeScan, and Worry-Free Business Security · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2020-24557
HighCVSS 7.8KEVSummary
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 temporarily disable security, 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.
Risk Assessment
A low-privileged attacker could escalate privileges and disable security, potentially leading to further system compromise.
Recommendation
Update Trend Micro Apex One and Worry-Free Business Security to the latest patched version.
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Original NVD description (English source)
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.