CVE-2025-54987: Trend Micro Apex One RCE Vulnerability

CVE-2025-54987 Overview

A critical vulnerability in Trend Micro Apex One (on-premise) management console could allow a pre-authenticated remote attacker to upload malicious code and execute commands on affected installations. This vulnerability is essentially the same as CVE-2025-54948 but targets a different CPU architecture. The flaw is classified as CWE-78 (OS Command Injection), enabling attackers to inject and execute arbitrary operating system commands through the vulnerable management console without requiring prior authentication.

Critical Impact

Unauthenticated attackers can remotely upload malicious code and execute arbitrary commands on Trend Micro Apex One management consoles, potentially leading to complete system compromise, data exfiltration, and lateral movement within enterprise networks.

Affected Products

• Trend Micro Apex One 2019 (on-premises) for Windows
• Trend Micro Apex One management console components

Discovery Timeline

• 2025-08-05 - CVE-2025-54987 published to NVD
• 2025-08-12 - Last updated in NVD database

Technical Details for CVE-2025-54987

Vulnerability Analysis

This vulnerability represents a severe security flaw in the Trend Micro Apex One management console that allows pre-authenticated remote attackers to upload and execute malicious code. The vulnerability is categorized under CWE-78 (Improper Neutralization of Special Elements used in an OS Command), indicating that the application fails to properly sanitize user-supplied input before passing it to system command execution functions.

The pre-authentication nature of this vulnerability significantly increases its severity, as attackers do not need valid credentials to exploit the flaw. Enterprise security management consoles like Apex One are high-value targets because they typically have elevated privileges and network visibility across managed endpoints.

This vulnerability shares similarities with CVE-2025-54948 but targets a different CPU architecture, suggesting architectural variations in how the vulnerable code path is implemented across different platform builds.

Root Cause

The root cause is improper input validation and sanitization in the Apex One management console's file upload and command execution functionality. The application fails to adequately neutralize special characters and command sequences in user-supplied input, allowing attackers to inject malicious OS commands that are subsequently executed with the privileges of the web application or underlying service.

Attack Vector

The attack vector is network-based, requiring no user interaction and no prior authentication. An attacker with network access to the Apex One management console can craft malicious requests to upload code and execute arbitrary commands on the target system. The attack complexity is low, making it accessible to attackers with limited technical sophistication.

The exploitation flow typically involves:

1. Identifying an exposed Apex One management console on the network
2. Crafting a malicious request that exploits the file upload mechanism
3. Injecting OS commands through improperly sanitized input fields
4. Achieving command execution on the underlying server with elevated privileges

Successful exploitation could result in complete compromise of the Apex One management server, access to managed endpoint configurations, credential theft, and potential pivot points for lateral movement within the enterprise network.

Detection Methods for CVE-2025-54987

Indicators of Compromise

• Unusual file uploads to the Apex One management console web directories
• Unexpected process spawning from the Apex One web application service
• Anomalous outbound network connections from the Apex One server
• Command execution artifacts in web server logs with encoded or obfuscated payloads

Detection Strategies

• Monitor web server access logs for suspicious requests to the Apex One management console, particularly POST requests to upload endpoints
• Implement network traffic analysis to detect exploitation attempts targeting the management console
• Deploy endpoint detection and response (EDR) solutions to identify suspicious process creation chains originating from web services
• Configure SIEM rules to alert on command injection patterns in HTTP request parameters

Monitoring Recommendations

• Enable detailed logging on the Apex One management console and forward logs to a centralized SIEM
• Monitor for unauthorized changes to Apex One configuration files and policies
• Implement network segmentation to restrict access to management consoles from untrusted network segments
• Conduct regular vulnerability scans against Apex One infrastructure to identify unpatched instances

How to Mitigate CVE-2025-54987

Immediate Actions Required

• Apply the security patch provided by Trend Micro immediately by consulting the Trend Micro Solution Guide
• Restrict network access to the Apex One management console to authorized administrative networks only
• Implement web application firewall (WAF) rules to detect and block command injection attempts
• Review Apex One server logs for evidence of prior exploitation attempts

Patch Information

Trend Micro has released a security update to address this vulnerability. Administrators should consult the official Trend Micro Solution Guide for detailed patching instructions and the latest security updates for Apex One (on-premise) deployments.

Workarounds

• Implement strict network access controls to limit management console access to trusted administrator IP addresses only
• Deploy a reverse proxy or WAF in front of the management console to filter malicious requests
• Consider temporarily disabling external access to the management console until patches can be applied
• Enable enhanced logging and monitoring to detect exploitation attempts while awaiting patch deployment

# Example: Restrict access to Apex One management console via firewall
# Limit access to management console port from trusted admin networks only
iptables -A INPUT -p tcp --dport 4343 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 4343 -j DROP