CVE-2026-92397 in RG-EW3000GX
Summary
by MITRE • 09/16/2026
A vulnerability has been found in Ruijie RG-EW3000GX EW_3.0(1)B11P380. Affected by this vulnerability is the function cc_set of the file unifyframe-sgi.elf of the component configChange. Such manipulation of the argument data.url leads to os command injection. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Ruijie RG-EW3000GX router, specifically affecting version EW_3.0(1)B11P380 of its firmware. This security flaw is located in the configChange component, which handles configuration modifications for the device. The root cause lies in the cc_set function found within the unifyframe-sgi.elf binary file. A critical input validation failure allows an attacker to manipulate the data.url argument passed to this function. Due to insufficient sanitization of user-supplied input, arbitrary operating system commands can be injected and executed with the privileges of the underlying service process. This represents a classic case of OS command injection where external control over code execution is achieved through improperly handled input parameters rather than direct exploitation of memory corruption or logic errors in authentication mechanisms.
From an operational perspective, this vulnerability poses a severe risk to network integrity and confidentiality. Because the attack vector is remote, an adversary does not need physical access to the device nor prior valid credentials if the affected endpoint is exposed to untrusted networks such as the internet. Successful exploitation grants the attacker full command-line access on the router's operating system. This level of control allows for comprehensive compromise of the network infrastructure. The attacker can pivot through the internal network, intercept sensitive traffic via man-in-the-middle attacks, modify routing tables to redirect users to malicious sites, or install persistent backdoors and malware within the device firmware. Given that routers often serve as gateways between trusted local networks and untrusted external environments, compromising this component effectively neutralizes perimeter defenses.
The vulnerability aligns with Common Weakness Enumeration identifier CWE-78 Improper Neutralization of Special Elements used in an OS Command commonly known as OS Command Injection. The specific attack technique corresponds to ATT&CK tactic T1059 Command and Scripting Interpreter under the execution phase, where adversaries use system commands to achieve their objectives without deploying additional payloads initially. Furthermore, because this affects a network device configuration interface, it also relates to CWE-284 Improper Access Control if authentication bypasses are involved in reaching the vulnerable endpoint, though the core flaw is strictly input validation failure leading to code execution. The disclosure of public exploits significantly lowers the barrier for entry, enabling less sophisticated threat actors to leverage existing tools against unpatched devices at scale.
Mitigation strategies must prioritize immediate isolation and patching if available from the vendor. Administrators should verify whether firmware updates addressing this specific flaw are provided by Ruijie and apply them promptly. In cases where patching is not immediately feasible, network segmentation becomes critical; the management interface of affected routers should be restricted to trusted IP addresses only using access control lists on upstream firewalls or switches. Additionally, disabling unnecessary services such as UPnP or remote administration interfaces reduces the attack surface exposed to potential attackers. Continuous monitoring for anomalous outbound connections from router IPs can help detect exploitation attempts early. Long-term remediation involves implementing strict input validation frameworks in all firmware development processes and conducting regular third-party security audits of embedded device software to prevent similar injection vulnerabilities in future releases.