CVE-2025-9244 in RE6250
Summary
by MITRE • 08/20/2025
A security vulnerability has been detected in Linksys RE6250, RE6300, RE6350, RE6500, RE7000 and RE9000 1.0.013.001/1.0.04.001/1.0.04.002/1.1.05.003/1.2.07.001. This vulnerability affects the function addStaticRoute of the file /goform/addStaticRoute. Such manipulation of the argument staticRoute_IP_setting/staticRoute_Netmask_setting/staticRoute_Gateway_setting/staticRoute_Metric_setting/staticRoute_destType_setting leads to os command injection. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/03/2025
This vulnerability resides within the Linksys router firmware versions 1.0.013.001 through 1.2.07.001 affecting multiple models including RE6250, RE6300, RE6350, RE6500, RE7000, and RE9000. The issue manifests in the web-based management interface through the addStaticRoute function located in the /goform/addStaticRoute endpoint. The vulnerability represents a critical command injection flaw that allows remote attackers to execute arbitrary operating system commands on the affected devices. This type of vulnerability falls under the CWE-78 category, specifically CWE-78: Improper Neutralization of Special Elements used in an OS Command, which is a fundamental security weakness where user-supplied input is directly incorporated into system commands without proper sanitization or validation.
The technical flaw occurs when an attacker manipulates the parameters staticRoute_IP_setting, staticRoute_Netmask_setting, staticRoute_Gateway_setting, staticRoute_Metric_setting, and staticRoute_destType_setting within the addStaticRoute function. These parameters are processed without adequate input validation or sanitization, allowing malicious payloads to be injected directly into the underlying operating system commands. The vulnerability enables attackers to execute arbitrary commands with the privileges of the web server process, which typically runs with elevated permissions on the router. This remote code execution capability allows adversaries to gain full control over the affected devices, potentially leading to complete network compromise. The ATT&CK framework categorizes this as T1059.001 - Command and Scripting Interpreter: PowerShell, though in this case it represents a more fundamental OS command injection vector rather than PowerShell specifically.
The operational impact of this vulnerability is severe as it enables remote attackers to compromise network infrastructure devices without requiring physical access or authentication credentials. Once exploited, attackers can establish persistent backdoors, redirect network traffic, steal sensitive information, or use the compromised devices as launching points for further attacks against internal networks. The vulnerability affects not just individual devices but entire network segments that rely on these routers for connectivity, potentially enabling lateral movement and privilege escalation throughout the network. Given that these are consumer-grade routers deployed in home and small office environments, the attack surface is particularly broad and often poorly secured, making these devices attractive targets for cybercriminals seeking to establish persistent network footholds.
Mitigation strategies should include immediate firmware updates from Linksys if available, network segmentation to isolate affected devices, and implementing network monitoring to detect suspicious command execution patterns. Organizations should also consider disabling remote management features for these devices when possible and implementing strict access controls for router management interfaces. The vulnerability demonstrates the critical importance of input validation and proper sanitization in web applications, particularly in network infrastructure devices where the consequences of exploitation can be severe. Security professionals should monitor for exploitation attempts and consider implementing network-based intrusion detection systems to identify potential command injection attempts targeting these specific endpoints. The lack of vendor response to early disclosure highlights the risks associated with unpatched firmware in critical network infrastructure components and underscores the need for proactive security measures in managing embedded systems within enterprise environments.