VDB-179747 · CVE-2021-36741 · EUVD-2021-23331

Trend Micro Apex One Management Console unrestricted upload

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Trend Micro Apex One, Apex One as a Service, OfficeScan XG and Worry-Free Business Security. The impacted element is an unknown function of the component Management Console Handler. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2021-36741. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Trend Micro Apex One, Apex One as a Service, OfficeScan XG and Worry-Free Business Security (Anti-Malware Software) (affected version unknown). It has been rated as critical. This issue affects an unknown functionality of the component Management Console Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 07/30/2021. It is possible to read the advisory at success.trendmicro.com. The identification of this vulnerability is CVE-2021-36741. Technical details are unknown but an exploit is available. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 11/17/2021:

Apply updates per vendor instructions.

The vulnerability is also documented in the databases at Zero-Day.cz (655) and EUVD (EUVD-2021-23331). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Anti-Malware Software

Vendor

Trend Micro

Name

License

commercial

Website

Vendor: https://www.trendmicro.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Unrestricted upload
CWE: CWE-434 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/14/2021 🔍
07/30/2021 +16 days 🔍
07/30/2021 +0 days 🔍
10/31/2025 +1554 days 🔍

Sourcesinfo

Vendor: trendmicro.com

Advisory: success.trendmicro.com
Status: Confirmed

CVE: CVE-2021-36741 (🔍)
GCVE (CVE): GCVE-0-2021-36741
GCVE (VulDB): GCVE-100-179747
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/30/2021 08:45
Updated: 10/31/2025 18:32
Changes: 07/30/2021 08:45 (36), 08/05/2021 17:56 (2), 04/21/2024 20:36 (27), 06/25/2024 16:37 (2), 07/26/2024 21:49 (19), 08/14/2024 18:44 (1), 09/16/2024 01:46 (1), 07/29/2025 00:46 (1), 10/31/2025 18:32 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.