CVE-2025-54948
📋 TL;DR
A critical vulnerability in Trend Micro Apex One (on-premise) management console allows unauthenticated remote attackers to upload malicious code and execute arbitrary commands on affected systems. This affects organizations running vulnerable versions of the Apex One management console. Attackers can gain complete control over the management console without requiring authentication.
💻 Affected Systems
- Trend Micro Apex One (on-premise) management console
📦 What is this software?
Apex One by Trendmicro
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Apex One management console leading to full enterprise network compromise, lateral movement to all managed endpoints, data exfiltration, and ransomware deployment across the entire organization.
Likely Case
Attackers gain administrative access to the Apex One console, disable security controls, deploy malware to managed endpoints, and establish persistent backdoors throughout the network.
If Mitigated
Limited impact due to network segmentation, strict firewall rules, and immediate patching preventing exploitation attempts.
🎯 Exploit Status
CISA has added this to their Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. The pre-authenticated nature makes exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references; check vendor advisory for exact patched version
Vendor Advisory: https://success.trendmicro.com/en-US/solution/KA-0020652
Restart Required: Yes
Instructions:
1. Review the Trend Micro advisory (KA-0020652). 2. Download the latest security patch from Trend Micro support portal. 3. Apply the patch to all Apex One management consoles following vendor instructions. 4. Restart the management console service as required. 5. Verify patch application and monitor for any issues.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to the Apex One management console to only trusted administrative networks
Configure firewall rules to allow only specific source IPs to access management console ports (typically 443/TCP)
Web Application Firewall
allDeploy WAF rules to block suspicious file upload patterns and command injection attempts
Configure WAF to block requests containing suspicious patterns in file upload parameters and command execution strings
🧯 If You Can't Patch
- Immediately isolate the Apex One management console from internet access and restrict to minimal necessary internal network segments
- Implement strict monitoring and alerting for any unauthorized access attempts or suspicious activities on the management console
🔍 How to Verify
Check if Vulnerable:
Check your Apex One management console version against the patched version specified in Trend Micro advisory KA-0020652Check Version:
Check the Apex One management console web interface or administration panel for version informationVerify Fix Applied:
Verify the patch version is installed and test that unauthorized file upload attempts are properly blocked📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to management console endpoints
- Unauthenticated access attempts to administrative interfaces
- Suspicious command execution patterns in console logs
Network Indicators:
- Unexpected outbound connections from management console to external IPs
- Unusual traffic patterns to management console upload endpoints
SIEM Query:
source="apex_one_logs" AND (event_type="file_upload" OR event_type="command_execution") AND user="anonymous" OR auth_status="failed"