# 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.

- Page: https://www.vulneraibility.com/cve/CVE-2020-24557
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2022-05-03
- EPSS: 2.67% (percentile 85.9)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-06)
- Published: 2020-09-01

## Affected versions

- Trend Micro Trend Micro Apex One: affected 2009 (on premise), SaaS
- Trend Micro Trend Micro Worry-Free Business Security: affected 10.0 SP1

A version outside these ranges is not a statement that it is unaffected.

## References

- [other] https://success.trendmicro.com/solution/000263632
- [other] https://www.zerodayinitiative.com/advisories/ZDI-20-1094/
- [other] https://success.trendmicro.com/solution/000267260
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-24557

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.