CVE-2021-36742 KEV
7.8
HIGH · CVSS 3.1 · EPSS 1.5% (pctl 73)
Patch first
On CISA KEV — known exploited in the wild, due 2021-11-17.
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.
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 1.48% — more likely to be exploited than 73% of all CVEs |
| Weakness | CWE-20 |
| On CISA KEV | yes — remediate by 2021-11-17 |
| Public exploit | none known |
| Published | 2021-07-29 |
| Last modified | 2026-06-17 |
CISA KEV
| Name | Trend Micro Multiple Products Improper Input Validation Vulnerability |
|---|---|
| Added | 2021-11-03 |
| Due | 2021-11-17 |
| Vendor / product | Trend Micro / Apex One, Apex One as a Service, and Worry-Free Business Security |
| Ransomware use | none reported |
Affected (5)
| Vendor | Product |
|---|---|
| microsoft | windows |
| trendmicro | apex one |
| trendmicro | officescan |
| trendmicro | officescan business security |
| trendmicro | worry-free business security |
References
- https://success.trendmicro.com/jp/solution/000287796
- https://success.trendmicro.com/jp/solution/000287815
- https://success.trendmicro.com/solution/000287819
- https://success.trendmicro.com/solution/000287820
- https://success.trendmicro.com/jp/solution/000287796
- https://success.trendmicro.com/jp/solution/000287815
- https://success.trendmicro.com/solution/000287819
- https://success.trendmicro.com/solution/000287820
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36742
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