CVE-2025-47188 in 6800
Summary
by MITRE • 08/07/2025
A vulnerability in the Mitel 6800 Series, 6900 Series, and 6900w Series SIP Phones, including the 6970 Conference Unit through 6.4 SP4, could allow an unauthenticated attacker to conduct a command injection attack due to insufficient parameter sanitization. A successful exploit could allow an attacker to execute arbitrary commands within the context of the phone, leading to disclosure or modification of sensitive configuration data or affecting device availability and operation.
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Analysis
by VulDB Data Team • 09/15/2025
The vulnerability identified as CVE-2025-47188 represents a critical command injection flaw affecting Mitel 6800 Series, 6900 Series, and 6900w Series SIP phones including the 6970 Conference Unit through firmware version 6.4 SP4. This security weakness resides in the phone's insufficient parameter sanitization mechanisms, creating a pathway for unauthenticated attackers to exploit the device remotely. The vulnerability operates at the application layer and specifically targets the phone's web interface and SIP protocol handling components, where user-supplied parameters are not adequately validated or sanitized before being processed by the underlying system.
The technical implementation of this vulnerability stems from improper input validation within the phone's web server component that handles HTTP requests and SIP signaling. When the device receives malformed or specially crafted parameters through web requests or SIP messages, the system fails to properly sanitize these inputs before executing any associated commands. This weakness aligns with CWE-77 and CWE-94 categories, representing command injection vulnerabilities that allow arbitrary code execution. Attackers can exploit this by crafting malicious HTTP requests or SIP messages containing shell metacharacters and command sequences that bypass input validation checks. The vulnerability's impact extends beyond simple data theft as it provides attackers with full administrative privileges within the phone's operating environment, enabling them to manipulate device configuration, access sensitive data, and potentially disrupt communication services.
The operational implications of CVE-2025-47188 are severe and multifaceted, affecting both the confidentiality and availability of the affected telephony infrastructure. An attacker who successfully exploits this vulnerability can execute arbitrary commands with the same privileges as the phone's system user, potentially leading to complete device compromise. The attack surface is particularly concerning given that the vulnerability affects multiple phone models within the Mitel ecosystem, creating a widespread risk across enterprise and business communication networks. Device availability is directly threatened as attackers can potentially cause service disruption by executing commands that modify system configurations or by triggering denial-of-service conditions. The vulnerability also poses significant risks to data integrity and confidentiality, as attackers can access and modify sensitive configuration parameters including SIP account credentials, network settings, and potentially other system data that could be used for further attacks within the network.
Organizations affected by this vulnerability should prioritize immediate mitigation strategies including firmware updates from Mitel, network segmentation to limit access to affected devices, and implementing intrusion detection systems to monitor for suspicious network activity. The remediation approach should align with ATT&CK framework techniques such as T1059 for command and scripting interpreter and T1566 for credential harvesting. Network administrators should also consider implementing web application firewalls to filter malicious requests and establish monitoring protocols specifically designed to detect command injection attempts. Given the unauthenticated nature of the attack vector, organizations should also review their physical security measures around telephony equipment and implement proper access controls to prevent unauthorized physical access to affected devices. The vulnerability underscores the importance of secure coding practices and input validation in embedded systems, particularly in critical infrastructure components where device compromise can have cascading effects on business continuity and security posture.