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Actively exploited · Published Jul 29, 2021 · Assigned by trendmicro

CVE-2021-36741

High 8.8 Exploited

In plain English

A high-severity unrestricted file upload in Trend Micro Apex One from Trend Micro. Attackers are actively exploiting it in the wild (listed by CISA on November 3, 2021). The chance it is exploited in the next 30 days is estimated at 5.0% (higher than 92% of all known vulnerabilities). Apply updates per vendor instructions.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)5.0%top 7.8% of all CVEs
Exploited in the wildYesCISA KEV since Nov 3, 2021
Attack toolingNoneno public tooling known

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by Nov 17, 2021.

Official 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.

Affected products (as reported)

VendorProductVersions
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

Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References