CVE-2021-36741

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

Vendor	Product	Versions
Trend Micro	Trend Micro Apex One	2019, SaaS
Trend Micro	Trend Micro OfficeScan	XG SP1
Trend Micro	Trend Micro Worry-Free Business Security	10.0 SP1

References

https://success.trendmicro.com/jp/solution/000287796Broken Link, Vendor Advisory
https://success.trendmicro.com/jp/solution/000287815Broken Link, Vendor Advisory
https://success.trendmicro.com/solution/000287819Broken Link, Vendor Advisory
https://success.trendmicro.com/solution/000287820Broken Link, Vendor Advisory
https://success.trendmicro.com/jp/solution/000287796Broken Link, Vendor Advisory
https://success.trendmicro.com/jp/solution/000287815Broken Link, Vendor Advisory
https://success.trendmicro.com/solution/000287819Broken Link, Vendor Advisory
https://success.trendmicro.com/solution/000287820Broken Link, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36741US Government Resource

Timeline

Published: Jul 29, 2021
Last modified: Jun 17, 2026
Added to CISA KEV: Nov 3, 2021
NVD status: Analyzed

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