Answer in brief
CVE-2021-36741 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Trend Micro/Trend Micro Apex One (generic), Trend Micro/Trend Micro OfficeScan (generic), Trend Micro/Trend Micro Worry-Free Business Security (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Trend Micro/Trend Micro Apex One (generic), Trend Micro/Trend Micro OfficeScan (generic), Trend Micro/Trend Micro Worry-Free Business Security (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Trend Micro/Trend Micro Apex Onegeneric | 2019, SaaS | Not reported |
| Trend Micro/Trend Micro OfficeScangeneric | XG SP1 | Not reported |
| Trend Micro/Trend Micro Worry-Free Business Securitygeneric | 10.0 SP1 | Not reported |
Published upstream
Jul 29, 2021
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordAn 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 remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2021-36741 records a High severity vulnerability in CVE Program Container. The current sources mark it as known exploited. The current feed maps Trend Micro/Trend Micro Apex One (generic), Trend Micro/Trend Micro OfficeScan (generic), Trend Micro/Trend Micro Worry-Free Business Security (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. Known-exploitation status makes exposure review time-sensitive. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Trend Micro/Trend Micro Apex One (generic), Trend Micro/Trend Micro OfficeScan (generic), Trend Micro/Trend Micro Worry-Free Business Security (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Trend Micro/Trend Micro Apex Onegeneric | 2019, SaaS | Not reported |
| Trend Micro/Trend Micro OfficeScangeneric | XG SP1 | Not reported |
| Trend Micro/Trend Micro Worry-Free Business Securitygeneric | 10.0 SP1 | Not reported |
Published upstream
Jul 29, 2021
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2025
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
May 24, 2026
Added to CISA KEV
Nov 3, 2021
Evidence: source:kev:kev:kev:recordAn 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 remote attached to upload arbitrary files on affected installations. Please note: an attacker must first obtain the ability to logon to the product�s management console in order to exploit this vulnerability.
Quoted source text, attributed separately from HOL analysis.