CVE-2026-27751 identifies a critical security flaw in the firmware of the SODOLA SL902-SWTGW124AS network gateway device produced by Shenzhen Hongyavision Technology Co., Ltd. The vulnerability stems from the presence of hardcoded default credentials embedded in firmware versions through 200.1.20. These credentials allow remote attackers to authenticate to the device's management interface without any password change enforcement, effectively bypassing any authentication controls. The vulnerability is classified under CWE-1392, indicating the use of default credentials. Exploitation requires no privileges, no user interaction, and can be performed remotely over the network, making it highly accessible to attackers. Once exploited, attackers gain full administrative control over the device, enabling them to manipulate configurations, intercept or redirect network traffic, deploy further malware, or disrupt network availability. The CVSS v4.0 score of 9.3 reflects the critical nature of this vulnerability, with high impact on confidentiality, integrity, and availability, and low attack complexity. Although no known exploits have been reported in the wild yet, the potential for abuse is significant given the device's role in network infrastructure. The absence of patch links suggests that vendors or users must seek firmware updates or alternative mitigations directly from the manufacturer or through network security controls.

The impact of CVE-2026-27751 is severe for organizations relying on the SODOLA SL902-SWTGW124AS devices as network gateways or management interfaces. Attackers gaining administrative access can fully control device configurations, potentially compromising entire network segments. This can lead to unauthorized data access, interception of sensitive communications, insertion of malicious payloads, or complete denial of service by disabling critical network functions. The breach of confidentiality, integrity, and availability can disrupt business operations, cause data breaches, and damage organizational reputation. Given the device's role in network management, exploitation could facilitate lateral movement within corporate networks or provide a foothold for advanced persistent threats. The lack of password change enforcement exacerbates risk by allowing straightforward exploitation without user interaction or prior access. Organizations worldwide using these devices face heightened risk of targeted attacks, especially in sectors where network security is paramount, such as telecommunications, government, and critical infrastructure.

To mitigate CVE-2026-27751, organizations should immediately identify all affected SODOLA SL902-SWTGW124AS devices within their environment. Since no official patches are currently available, the primary mitigation is to change default credentials on all devices to strong, unique passwords. If the device firmware does not allow changing or enforcing password updates, network administrators should restrict access to the management interface by implementing network segmentation and firewall rules to limit management access to trusted IP addresses only. Employing VPNs or secure management channels can further reduce exposure. Continuous monitoring and logging of management interface access attempts should be enabled to detect suspicious activity early. Organizations should engage with the vendor for firmware updates or security advisories and consider replacing vulnerable devices if no timely patch is forthcoming. Additionally, integrating these devices into broader network security frameworks, such as intrusion detection systems and endpoint protection, can help detect and respond to exploitation attempts.