Trend Micro Apex One (2019), OfficeScan XG and Worry-Free Business Security (9.0, 9.5, 10.0) agents are affected by a content validation escape vulnerability which could allow an attacker to manipulate certain agent client components. An attempted attack requires user authentication.
Conclusion & alert: CVE-2020-8468 is rated Critical Active Threat (94.3/100): CVSS High severity, with high exploitation likelihood (EPSS 19.09%, 95th percentile). Core evidence: CISA KEV confirms active exploitation (added 2021-11-03) affecting Trend Micro / Apex One, OfficeScan and Worry-Free Business Security Agents. a weakness (CWE-74) Unauthenticated remote administrative access may be possible. Mandatory action: The CISA remediation deadline has passed—treat as an emergency patch priority.
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: Trend Micro Multiple Products Content Validation Escape 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 | 18.38% | 19.09% | +0.71% |
| 2 | 2026-01-02 | 12.14% | 18.38% | +6.24% |
| 3 | 2025-11-21 | — | 12.14% | — |
Full EPSS history (16 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:*:*:*:*:*:* |
| trendmicro | worry-free_business_security | 9.0 | cpe:2.3:a:trendmicro:worry-free_business_security:9.0:sp3:*:*:*:*:*:* |
| trendmicro | worry-free_business_security | 9.5 | cpe:2.3:a:trendmicro:worry-free_business_security:9.5:*:*:*:*:*:*:* |
| trendmicro | worry-free_business_security | 10.0 | cpe:2.3:a:trendmicro:worry-free_business_security:10.0:-:*:*:*:*:*:* |
| trendmicro | worry-free_business_security | 10.0 | cpe:2.3:a:trendmicro:worry-free_business_security:10.0:sp1:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://success.trendmicro.com/jp/solution/000244253 | Patch Vendor Advisory |
| https://success.trendmicro.com/jp/solution/000244836 | Patch Vendor Advisory |
| https://success.trendmicro.com/solution/000245571 | Patch Vendor Advisory |
| https://success.trendmicro.com/solution/000245572 | Patch Vendor Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-8468 | US Government Resource |