# CVE-2021-36741

An improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 10.0 SP1 allows a remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.

- Page: https://www.vulneraibility.com/cve/CVE-2021-36741
- CVSS: 8.8
- Known exploited: yes, in CISA KEV since 2021-11-03; CISA due date 2021-11-17
- EPSS: 4.95% (percentile 92.3)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-02-06)
- Weakness: CWE-434
- Published: 2021-07-29

## Affected versions

- Trend Micro Trend Micro Apex One: affected 2019, SaaS
- Trend Micro Trend Micro OfficeScan: affected XG SP1
- 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/000287819
- [other] https://success.trendmicro.com/solution/000287820
- [other] https://success.trendmicro.com/jp/solution/000287796
- [other] https://success.trendmicro.com/jp/solution/000287815
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741

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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.