CVE-2026-96774 in IP Network Audio Device XC-9603
Summary
by MITRE • 09/24/2026
A vulnerability was found in SPON Communications IP Network Audio Device XC-9603 1.2.3_20181106 Build 107. This affects the function loadCfg of the file /ini/sys_cfg.txt of the component Configuration File Download. The manipulation results in information disclosure. The attack can be launched remotely. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/24/2026
The SPON Communications IP Network Audio Device XC-9603, specifically running firmware version 1.2.3_20181106 Build 107, contains a critical security flaw within its configuration management subsystem. This vulnerability is located in the loadCfg function associated with the file /ini/sys_cfg.txt, which serves as the primary repository for system settings and operational parameters. The component responsible for handling Configuration File Download processes this input without implementing adequate validation or sanitization mechanisms. As a result, an attacker can manipulate the contents of this configuration file to trigger unintended behavior within the device's firmware logic. This flaw represents a classic instance of improper input validation where the software fails to verify that the data being processed conforms to expected formats or constraints before execution.
The primary consequence of exploiting this vulnerability is information disclosure. By manipulating the sys_cfg.txt file, an attacker can potentially extract sensitive system information such as network configuration details, administrative credentials, encryption keys, or internal IP addresses and port mappings. This exposure compromises the confidentiality integrity of the device's operational environment. Since the attack vector allows for remote execution over a network connection, the risk is significantly amplified in deployed environments where these audio devices are often connected to corporate LANs or public-facing networks without sufficient segmentation. The ability to remotely access internal configuration data facilitates further reconnaissance and can serve as a stepping stone for more severe attacks such as privilege escalation or lateral movement within the target network infrastructure.
From a classification perspective, this vulnerability aligns with CWE-20 Improper Input Validation and potentially CWE-209 Generation of Error Message Containing Sensitive Information if the manipulation results in error logs leaking data. In terms of offensive security frameworks, this behavior is consistent with ATT&CK technique T1505.003 Server Software Component: Web Shell or more broadly T1505 Server Software Component for initial access and persistence through configuration file modification. The lack of response from the vendor upon notification indicates a potential gap in their vulnerability management lifecycle, leaving deployed systems exposed to exploitation without an official patch available. This situation underscores the importance of network segmentation and strict access controls for IoT devices that handle sensitive operational data.
To mitigate the risks associated with this flaw until a vendor-supplied fix is released or if no such fix becomes available, organizations should implement robust network-level security measures. It is critical to restrict access to the management interfaces of these audio devices using firewalls or VLANs so that only authorized administrative workstations can communicate with them. Additionally, deploying intrusion detection systems configured to monitor for anomalous HTTP requests targeting configuration endpoints can help identify attempted exploitation in real time. Regular auditing of device configurations and ensuring that default credentials are changed is also essential. Given the vendor's unresponsiveness, organizations must treat this vulnerability as a high-priority risk requiring immediate compensating controls to prevent unauthorized information disclosure and potential compromise of the broader network infrastructure.