Trend Micro Apex One and OfficeScan Migration Tool Remote Code Execution Vulnerability (CVE-2020-8467) Analysis and Mitigation Guide
Executive & SecOps Summary
SECOPS ASSESSMENTTrend Micro Apex One (2019) and OfficeScan XG server environments.
An authenticated remote attacker can exploit the migration tool component to execute arbitrary code (RCE) with system privileges on the affected server.
Immediately apply the official Critical Patch provided by Trend Micro and restrict access to migration-related ports.
Affected Products & Version Scope
Remediation & Live Workaround Commands
PATCH & WORKAROUND1. Official Patch & Version Upgrade Commands
Administrators must download and apply the latest Critical Patch or Service Pack from the official Trend Micro support portal.
# PowerShell script to verify the current build version on the Trend Micro server
$RegistryPath = 'HKLM:\SOFTWARE\Wow6432Node\TrendMicro\OfficeScan\service\Information'
if (Test-Path $RegistryPath) {
Get-ItemProperty -Path $RegistryPath | Select-Object -Property Version, ProgramVer, ServicePack
} else {
Write-Host 'Trend Micro OfficeScan/Apex One registry path not found.' -ForegroundColor Red
}
# Download and execute the official patch installer (e.g., Apex One 2019 CP 8467 or higher) with Administrator privileges.2. Temporary Workaround & Hardening Configuration
If patching cannot be applied immediately, restrict network access to the migration tool and management console ports using firewalls.
# Block external access to Apex One management and migration ports (e.g., 4343, 8080) using iptables
# Allow only trusted administrator IP (e.g., 192.168.10.50) and drop other traffic
iptables -A INPUT -p tcp -s 192.168.10.50 --dport 4343 -j ACCEPT
iptables -A INPUT -p tcp --dport 4343 -j DROP3. Log Audit & IoC Verification Commands
Inspect the migration tool log directory for any anomalous file creation or execution history.
# Search for suspicious patterns or command executions in the Migration Tool logs
$LogPath = 'C:\Program Files (x86)\Trend Micro\Apex One\PCCSRV\Admin\Utility\MigrationTool\*.log'
if (Test-Path $LogPath) {
Select-String -Path $LogPath -Pattern 'fail', 'error', 'unauthorized', 'cmd.exe', 'powershell.exe' | Select-Object -First 50
} else {
Write-Host 'Migration Tool log directory not found.' -ForegroundColor Yellow
}Block Kernel Privilege Escalation & Ransomware Payloads Before You Can Reboot
Protect unpatched Windows, Linux, and macOS workloads against in-memory exploitation and lateral movement with autonomous EDR.
Technical Root Cause & Exploitation Mechanics
1. Vulnerability Overview & Root Cause
This vulnerability (CVE-2020-8467) exists within the Migration Tool component of Trend Micro Apex One (2019) and OfficeScan XG. The root cause is the lack of proper input validation and sanitization of data received over the network by the migration component. When an authenticated attacker sends a specially crafted request to the vulnerable component, the server processes the input as a system command, leading to remote code execution.
2. Exploitation Mechanics & Attack Scenario
An exploitation attempt requires the attacker to first obtain valid user authentication credentials on the target Apex One or OfficeScan management console. Once authenticated, the attacker transmits malicious payloads to the specific port or web endpoint where the migration tool component listens. Because the component fails to validate the input, it executes the payload with high privileges. This vulnerability is actively exploited in the wild and is listed in the CISA KEV (Known Exploited Vulnerabilities) catalog.
3. Infrastructure & Business Impact
Trend Micro Apex One and OfficeScan serve as centralized endpoint security management servers. Compromising these servers allows attackers to gain control over the entire internal endpoint infrastructure. Attackers can disable antivirus agents, deploy ransomware, or exfiltrate sensitive corporate data, leading to severe business disruption and data breaches.
Official Vendor Advisories & References
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.
Frequently Asked SecOps Questions (CVE-2020-8467)
FAQQ1. How critical is CVE-2020-8467 and is it actively exploited in the wild?
CVE-2020-8467 is rated CVSS 8.8 (HIGH) with a 30-day EPSS exploitation probability of 10.9%. It is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, requiring immediate emergency remediation.
Q2. Which vendors and products are affected by CVE-2020-8467?
Primary impacted vendors include trendmicro across apex_one, officescan. Scope summary: Trend Micro Apex One (2019) and OfficeScan XG (all builds prior to the official critical patches)
Q3. What temporary mitigations or workarounds exist for CVE-2020-8467 before patching?
[Mitigation] Immediately apply the official Critical Patch provided by Trend Micro and restrict access to migration-related ports. Follow the CLI remediation commands and interactive SecOps checklist on this page to restrict exposure prior to your maintenance window.
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