CVE-2021-36742
HIGH KEVTrend Micro Apex One/OfficeScan XG/Worry-Free Business Security - Local Privilege Escalation
Title source: llmExploitation Summary
CVE-2021-36742 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added November 3, 2021.
Description
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.
References (5)
Core 5
Core References
Vendor Advisory x_refsource_misc
https://success.trendmicro.com/solution/000287819
Vendor Advisory x_refsource_misc
https://success.trendmicro.com/solution/000287820
Vendor Advisory x_refsource_misc
https://success.trendmicro.com/jp/solution/000287796
Vendor Advisory x_refsource_misc
https://success.trendmicro.com/jp/solution/000287815
US Government Resource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36742
Scores
CVSS v3
7.8
EPSS
0.0143
EPSS Percentile
81.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
active
Automatable
no
Technical Impact
total
Details
CISA KEV
2021-11-03
VulnCheck KEV
2021-08-11
InTheWild.io
2021-07-28
ENISA EUVD
EUVD-2021-23332
CWE
CWE-20
Status
published
Products (4)
trendmicro/apex_one
2019
trendmicro/officescan
xg sp1
trendmicro/officescan_business_security
10.0 sp1
trendmicro/worry-free_business_security
10.0 sp1
Published
Jul 29, 2021
KEV Added
Nov 03, 2021
Tracked Since
Feb 18, 2026