CVE-2021-36742 : A improper input validation vulnerability in Trend Micro Apex One, Apex One as a

A 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 local attacker to escalate privileges on affected installations. Please note: an attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Published 2021-07-29 20:15:08

Updated 2025-02-13 14:26:25

Source Trend Micro, Inc.

View at NVD, CVE.org

Products affected by CVE-2021-36742

Trendmicro » Officescan » Version: XG Update SP1
cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*
Matching versions
Trendmicro » Apex One » Version: 2019
cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A
Trendmicro » Worry-free Business Security » Version: 10.0 Update SP1
cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*
Matching versions
When used together with: Microsoft » Windows » Version: N/A
Trendmicro » Officescan Business Security » Version: 10.0 Update SP1
cpe:2.3:a:trendmicro:officescan_business_security:10.0:sp1:*:*:*:*:*:*
Matching versions

CVE-2021-36742 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Trend Micro Multiple Products Improper Input Validation Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Trend Micro Apex One, Apex One as a Service, and Worry-Free Business Security contain an improper input validation vulnerability that allows for privilege escalation.

Notes:

https://success.trendmicro.com/dcx/s/solution/000287819?language=en_US, https://success.trendmicro.com/dcx/s/solution/000287820?language=en_US; https://nvd.nist.gov/vuln/detail/CVE-2021-36742

Added on 2021-11-03 Action due date 2021-11-17

Exploit prediction scoring system (EPSS) score for CVE-2021-36742

EPSS FAQ

0.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 48 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-36742

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
4.6	MEDIUM	AV:L/AC:L/Au:N/C:P/I:P/A:P	3.9	6.4	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-02-06
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
7.8	HIGH	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	1.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2021-36742

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2021-36742

https://success.trendmicro.com/jp/solution/000287796

Q&A | Trend Micro Business Support
Vendor Advisory

CVEs referencing this url
https://success.trendmicro.com/solution/000287820

Vendor Advisory

CVEs referencing this url
https://success.trendmicro.com/solution/000287819

Vendor Advisory

CVEs referencing this url
https://success.trendmicro.com/jp/solution/000287815

Q&A | Trend Micro Business Support
Vendor Advisory

CVEs referencing this url