A migration tool component of Trend Micro Apex One (2019) and OfficeScan XG contains a vulnerability which could allow remote attackers to execute arbitrary code on affected installations (RCE). An attempted attack requires user authentication.
Conclusion & alert: CVE-2020-8467 is rated Critical Active Threat (95/100): CVSS High severity, with high exploitation likelihood (EPSS 31.11%, 97th percentile). Core evidence: CISA KEV confirms active exploitation (added 2021-11-03) affecting Trend Micro / Apex One and OfficeScan. Unauthenticated remote administrative access may be possible. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
: Trend Micro Apex One and OfficeScan Remote Code Execution Vulnerability · CISA KEV detail
: 2021-11-03
: 2022-05-03
: Apply updates per vendor instructions.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-19 | 30.16% | 31.11% | +0.95% |
| 2 | 2026-01-02 | 27.58% | 30.16% | +2.58% |
| 3 | 2025-11-21 | — | 27.58% | — |
Full EPSS history (25 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 6.5 | 2.0 | MEDIUM |
|
8.0 | 6.4 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| trendmicro | apex_one | 2019 | cpe:2.3:a:trendmicro:apex_one:2019:*:*:*:*:*:*:* |
| trendmicro | officescan | xg | cpe:2.3:a:trendmicro:officescan:xg:-:*:*:*:*:*:* |
| trendmicro | officescan | xg | cpe:2.3:a:trendmicro:officescan:xg:sp1:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://success.trendmicro.com/jp/solution/000244253 | Patch Vendor Advisory |
| https://success.trendmicro.com/solution/000245571 | Patch Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8467 | US Government Resource |