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Findings

CVE-2020-24557

Trend Micro Multiple Products Improper Access Control Vulnerability

Published Sep 1, 2020 · updated Jun 16, 2026 · trendmicro apex one

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.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 1, 2020 · Catalog

    Detected

    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 vulnerabil

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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 vulnerabil

Required action

Apply updates per vendor instructions.

CISA due date May 3, 2022

Affected

  • cpe trendmicro/apex oneversion unspecified
  • cpe trendmicro/apex one2019
  • cpe trendmicro/worry-free business security10.0
  • vendor Trend Micro Apex One, OfficeScan, and Worry-Free Business Securityversion unspecified

Sources

  • CISA KEVConfirmed exploitationCVE-2020-24557

    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.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2020-24557

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-24557

    30-day exploitation probability 2.7%

    first.org
  • NIST NVDVulnerability recordCVE-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 attack

    nvd.nist.gov

References

CVE-2020-24557 · ZeroDay Findings