CVE-2021-36742

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.015 · 74 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

1.48% (74th) EPSS

CVSS 4.6 · medium

Is it mine?

9 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2021-11-17

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-27

Trend Micro Multiple Products Improper Input Validation Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–7.8

v2.04.6mediumAV:L/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 3.9 · impact 6.4

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 1.8 · impact 5.9

v3.17.8highAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 1.8 · impact 5.9

v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-284US

affected products (9)

Products and version ranges known to be affected.

Trend Micro Trend Micro Apex One≤ 2019, SaaSenisa_euvdEU
Trend Micro Trend Micro OfficeScan≤ XG SP1enisa_euvdEU
Trend Micro Trend Micro Worry-Free Business Security≤ 10.0 SP1enisa_euvdEU
Trend Micro Apex One≤ On Premise (2019)fstec_bduRU
Trend Micro Worry-Free Business Security≤ 10.0 SP1fstec_bduRU
trendmicro apex one= 2019nvdUScpe:2.3:a:trendmicro:apex_one:*:*:*:*:*:*:*:*
trendmicro officescan= xgnvdUScpe:2.3:a:trendmicro:officescan:*:*:*:*:*:*:*:*
trendmicro officescan business security= 10.0nvdUScpe:2.3:a:trendmicro:officescan_business_security:*:*:*:*:*:*:*:*
trendmicro worry-free business security= 10.0nvdUScpe:2.3:a:trendmicro:worry-free_business_security:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-07-29modified 2026-06-17

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+25171 more

references (16)

External citations — patches, advisories, analysis.

scry

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