CVE-2026-93289 in Omni C20
Summary
by MITRE • 09/24/2026
The affected products are vulnerable to command injection attack that could allow an unauthenticated attacker to execute system commands during the pairing process.
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Analysis
by VulDB Data Team • 09/24/2026
The identified vulnerability represents a critical security flaw within the device pairing mechanism, specifically manifesting as a command injection weakness. This type of defect typically arises when software fails to adequately sanitize or validate user-supplied input before passing it to underlying operating system commands or interpreters. In the context of product pairing, this process often involves complex configuration exchanges where devices negotiate settings and establish trust relationships. If the implementation does not strictly enforce a whitelist of allowed characters or properly escape special shell metacharacters such as semicolons, pipes, or backticks within these input fields, an attacker can inject arbitrary commands into the execution context. The severity is compounded by the fact that this vulnerability allows for unauthenticated access, meaning no prior credentials are required to exploit the flaw, significantly lowering the barrier to entry for malicious actors.
From a technical perspective, command injection vulnerabilities fall under CWE-78, which covers Improper Neutralization of Special Elements used in an OS Command. The operational impact is severe because successful exploitation grants the attacker the ability to execute system-level commands with the privileges associated with the application running the pairing process. Depending on how the service is configured, this could range from reading sensitive configuration files and exfiltrating network topology data to installing backdoors, pivoting into internal networks, or achieving full control over the affected device. In IoT environments or industrial control systems where such pairing mechanisms are common, compromising a single node can serve as an entry point for broader lateral movement across the infrastructure. The lack of authentication requirement makes this vulnerability particularly dangerous in public-facing or poorly segmented network segments where devices may be exposed to untrusted networks.
This attack vector aligns with several techniques documented in the MITRE ATT&CK framework, most notably T1059 Command and Scripting Interpreter, which covers the execution of commands via system shells. Furthermore, if the pairing process involves initial device discovery or network configuration, it may also relate to T1046 Network Service Discovery or T1133 External Remote Services, depending on whether the attack is conducted locally over a physical interface or remotely over a network protocol. The exploitation likely occurs during the handshake phase where input data is parsed and processed by backend services that invoke system binaries without sufficient validation checks.
Mitigation strategies must focus on rigorous input validation and secure coding practices. Developers should implement strict allow-listing for all inputs received during the pairing process, ensuring that only expected alphanumeric characters or specific predefined formats are accepted. Any special characters required for legitimate functionality should be escaped using language-specific functions designed to neutralize shell metacharacters effectively. Additionally, employing principle of least privilege is crucial; the service handling device pairing should run with minimal system permissions so that even if command injection occurs, the attacker cannot escalate privileges or access sensitive parts of the operating system. Network-level mitigations include restricting access to the pairing interface through firewall rules and ensuring that such interfaces are not exposed to untrusted networks without proper authentication mechanisms in place as a defense-in-depth measure. Regular security testing including static application security testing and dynamic analysis can help identify similar flaws before deployment.