CVE-2014-8361 in Realtek
Summary
by MITRE
The miniigd SOAP service in Realtek SDK allows remote attackers to execute arbitrary code via a crafted NewInternalClient request, as exploited in the wild through 2023.
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Analysis
by VulDB Data Team • 04/22/2026
The vulnerability identified as CVE-2014-8361 represents a critical remote code execution flaw within the miniigd SOAP service component of Realtek SDK implementations. This vulnerability exists in the Internet Gateway Device (IGD) functionality that handles Simple Object Access Protocol requests, specifically targeting the NewInternalClient request processing mechanism. The issue stems from inadequate input validation and sanitization within the SOAP service layer, creating a pathway for malicious actors to inject and execute arbitrary code on affected devices. The vulnerability affects various Realtek-based networking equipment including routers, gateways, and network appliances that utilize the SDK's IGD functionality.
The technical flaw manifests through improper handling of user-supplied data within the SOAP service implementation. When the miniigd service receives a crafted NewInternalClient request, it fails to properly validate or sanitize the input parameters before processing them. This lack of input validation creates a buffer overflow condition or command injection vulnerability that can be exploited by remote attackers. The vulnerability is classified under CWE-121 as a buffer overflow in the context of a command injection attack, where attacker-controlled data flows into executable code paths. The flaw is particularly dangerous because it operates at the service level within the device's firmware, providing attackers with elevated privileges to execute arbitrary commands with the same permissions as the SOAP service itself.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise and potential network infiltration. Attackers can leverage this vulnerability to gain unauthorized access to affected devices, potentially leading to full system control, data exfiltration, or use of the compromised device as a pivot point for further attacks within the network. The vulnerability affects devices that implement the UPnP (Universal Plug and Play) standard through Realtek SDK components, making it particularly concerning for home and enterprise networks where such devices are commonly deployed. This vulnerability aligns with ATT&CK technique T1059.007 for command and script interpreter, specifically targeting remote code execution through web services. The impact is amplified in environments where these devices are not properly segmented or monitored, as the compromised device can serve as a persistent foothold for attackers.
Mitigation strategies for CVE-2014-8361 should focus on both immediate remediation and long-term security hardening measures. The primary recommendation involves applying firmware updates from Realtek or device vendors that address the input validation issues within the miniigd SOAP service. Network administrators should disable UPnP functionality on affected devices when not required, as this reduces the attack surface significantly. Implementing network segmentation and access control measures can limit the potential impact of exploitation, while monitoring for unusual SOAP service activity can help detect exploitation attempts. The vulnerability also highlights the importance of secure coding practices, particularly in service implementations that handle external input, and aligns with security standards such as those outlined in the OWASP Top Ten and NIST guidelines for secure software development. Regular vulnerability assessments and network scanning should be conducted to identify and remediate similar issues across the entire network infrastructure.