CASCACascade Atlas

Evidence dossier

CVE-2021-36742

CVE-2021-36742

53.9–76.9Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

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.

State
PUBLISHED
Published
Jul 29, 2021
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS1.48%

2026-07-18 · v2026.06.15 · percentile 71.1%

Source stateConflict visible

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

trendmicrooriginal assertion
container

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.

CISA KEVoriginal assertion
observed_exploitation

Trend Micro Multiple Products Improper Input Validation Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.014820000000; percentile 0.710760000000

Applicability

Cited product scope

Trace impact →
Trend MicroTrend Micro Apex One
[{"status": "affected", "version": "2019, SaaS"}]unknown
Trend MicroTrend Micro OfficeScan
[{"status": "affected", "version": "XG SP1"}]unknown
Trend MicroTrend Micro Worry-Free Business Security
[{"status": "affected", "version": "10.0 SP1"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:trendmicro:officescan_business_security:10.0:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*constrained

Assessments

CVSS by origin

7.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6
nvd@nist.govCVSS 2.0 · role PrimaryAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.