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Findings

CVE-2021-36741

Trend Micro Multiple Products Improper Input Validation Vulnerability

Published Jul 29, 2021 · updated Jun 16, 2026 · trendmicro officescan

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.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 29, 2021 · Catalog

    Detected

    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.

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Nov 17, 2021 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date Nov 17, 2021

Affected

  • cpe trendmicro/apex one2019
  • cpe trendmicro/officescanxg
  • cpe trendmicro/officescan business security10.0
  • cpe trendmicro/worry-free business security10.0
  • vendor Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Securityversion unspecified

Sources

  • CISA KEVCVE-2021-36741

    Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows a remote attacker to upload files.

    cisa.gov
  • CVE.orgCVE-2021-36741

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-36741

    30-day exploitation probability 5.0%

    first.org
  • NIST NVDCVE-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

    nvd.nist.gov

References