CVE-2026-101073 in NR289-GE
Summary
by MITRE • 09/28/2026
A security flaw has been discovered in Netcore NR289-GE 1.4.5102. Impacted is an unknown function of the file /bin/boa of the component CGI Dispatcher. Performing a manipulation results in improper authentication. The attack may be initiated remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/28/2026
The Netcore NR289-GE router, specifically version 1.4.5102, contains a critical authentication bypass vulnerability within its CGI Dispatcher component. This flaw resides in an unspecified function of the /bin/boa binary, which serves as the web server interface for managing device configurations and accessing administrative features. The nature of this defect allows attackers to manipulate specific requests or parameters to circumvent standard authentication mechanisms entirely. Instead of requiring valid credentials such as a username and password, the vulnerability enables unauthorized entities to gain access to sensitive system functions by exploiting logic errors in how the boa process validates incoming HTTP requests against its internal security policies.
This improper authentication issue is classified under CWE-287, which covers Improper Authentication, indicating that the software fails to correctly verify the identity of a user or actor before granting access to protected resources. From an offensive security perspective, this vulnerability aligns with MITRE ATT&CK techniques related to Initial Access and Privilege Escalation, as it allows external actors to establish a foothold within the network infrastructure without prior authorization. The ability to bypass authentication on a router is particularly severe because routers often serve as gateways between internal local networks and the public internet, making them high-value targets for lateral movement and further exploitation of connected devices.
The operational impact of this vulnerability is significant due to its remote exploitability. Attackers can initiate these attacks over the network without requiring physical access or prior user interaction, such as clicking a malicious link. The fact that an active exploit has been released publicly dramatically lowers the barrier to entry for threat actors, including automated bots and script kiddies who may scan large portions of the internet for vulnerable devices. Once exploited, attackers can potentially modify router settings, redirect traffic through man-in-the-middle attacks, intercept sensitive data transmitted over the network, or use the compromised device as a pivot point for broader network intrusions. The lack of vendor response to early disclosure attempts suggests that users may not receive timely patches via standard update channels, leaving many devices exposed indefinitely unless manual intervention occurs.
Mitigation strategies must focus on immediate isolation and configuration hardening since automatic patching is unreliable in this case. Administrators should restrict access to the router's management interface by disabling remote administration features if they are not strictly necessary for business operations. Implementing network segmentation can also limit the blast radius, ensuring that even if a device is compromised, it cannot easily communicate with critical internal assets. Additionally, changing default credentials and enforcing strong password policies remains essential, although in this specific instance, the flaw allows bypassing those controls entirely. Users are advised to monitor for firmware updates from alternative sources or consider replacing outdated hardware with models that have active vendor support and a transparent security patch lifecycle. Regular network monitoring for anomalous traffic patterns originating from IoT devices can also help detect exploitation attempts early.