CVE-2024-48904 Overview
CVE-2024-48904 is an unauthenticated command injection vulnerability in Trend Micro Cloud Edge appliances. A remote attacker can exploit the flaw to execute arbitrary commands on affected devices without any credentials. The weakness is classified under CWE-77: Improper Neutralization of Special Elements used in a Command.
Critical Impact
Unauthenticated attackers can achieve arbitrary code execution on Trend Micro Cloud Edge gateways, compromising perimeter defenses and pivoting into protected networks.
Affected Products
- Trend Micro Cloud Edge (on-premises gateway appliance)
- Cloud Edge versions prior to the vendor-supplied fix referenced in Trend Micro Solution KA-0017998
- Cloud Edge deployments exposing the management or service interface to untrusted networks
Discovery Timeline
- 2024-10-22 - CVE-2024-48904 published to NVD
- 2025-07-31 - Last updated in NVD database
- Coordinated disclosure handled through the Zero Day Initiative advisory ZDI-24-1418
Technical Details for CVE-2024-48904
Vulnerability Analysis
The vulnerability is a command injection flaw [CWE-77] in Trend Micro Cloud Edge, a security gateway appliance deployed at network perimeters. An attacker reaches the vulnerable component over the network and supplies crafted input that is incorporated into a shell command without proper neutralization. Authentication is not required, which removes the most common barrier to exploitation. Successful exploitation gives the attacker the privileges of the service handling the request, typically allowing full control of the appliance.
The EPSS model places this issue in the 91st percentile of vulnerabilities by exploitation likelihood, reflecting both the lack of authentication and the network attack surface.
Root Cause
The root cause is improper neutralization of special characters before passing attacker-controlled input to a system command interpreter. The application constructs a command string that mixes trusted command syntax with untrusted user data. Shell metacharacters such as ;, |, &&, and backticks are not escaped or filtered. As a result, the operating system executes injected commands alongside the intended operation.
Attack Vector
The attack vector is network-based and requires no user interaction or prior authentication. An attacker sends a crafted HTTP request to an exposed Cloud Edge service endpoint. The malicious payload embeds shell metacharacters within a parameter that the appliance forwards into an underlying command. The injected commands execute on the appliance with service-level privileges.
No verified public proof-of-concept code is available. Technical details on the affected code path are described in the Zero Day Initiative advisory ZDI-24-1418.
Detection Methods for CVE-2024-48904
Indicators of Compromise
- Unexpected child processes spawned by the Cloud Edge web service, such as sh, bash, wget, curl, or nc
- HTTP request logs containing shell metacharacters (;, |, &, backticks, $()) in parameter values
- Outbound connections from the appliance to unfamiliar IP addresses or download of secondary payloads
- New cron entries, modified startup scripts, or unexplained accounts on the appliance
Detection Strategies
- Inspect Cloud Edge HTTP access logs for anomalous request patterns and encoded shell metacharacters in query strings and POST bodies
- Correlate appliance process telemetry with network egress events to surface command execution followed by data exfiltration
- Hunt for known ZDI-24-1418 exploitation patterns referenced in the vendor advisory
Monitoring Recommendations
- Forward Cloud Edge syslog and web server logs to a centralized SIEM for long-term retention and rule-based alerting
- Alert on any non-standard process execution under the Cloud Edge service account
- Monitor outbound traffic from gateway appliances and apply egress filtering to restrict callbacks to attacker infrastructure
How to Mitigate CVE-2024-48904
Immediate Actions Required
- Apply the official fix described in Trend Micro Solution KA-0017998 on every Cloud Edge appliance
- Restrict network exposure of Cloud Edge management and service interfaces to trusted administrative ranges only
- Audit appliances for signs of prior compromise, including unexpected processes, accounts, and outbound connections
- Rotate administrative credentials and API tokens stored on or processed by the appliance
Patch Information
Trend Micro has released a remediation documented in Trend Micro Solution KA-0017998. Administrators should consult the advisory for the exact fixed build and upgrade procedure for their deployment model. Coordinated disclosure was handled through the Zero Day Initiative advisory ZDI-24-1418.
Workarounds
- Place Cloud Edge management interfaces behind a VPN or jump host until patching is complete
- Apply network access control lists that block untrusted sources from reaching the vulnerable service endpoint
- Enable strict egress filtering on the appliance to limit the impact of any successful command execution
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
