The vulnerability identified as CVE-2026-27756 affects the SODOLA SL902-SWTGW124AS device firmware versions up to 200.1.20, produced by Shenzhen Hongyavision Technology Co., Ltd. (Sodola Networks). It is a reflected cross-site scripting (XSS) flaw categorized under CWE-79, which occurs due to improper neutralization of user-supplied input during web page generation in the device's management interface. Specifically, the device fails to properly encode or sanitize input parameters before reflecting them back in the HTML response. An attacker can exploit this by crafting a malicious URL containing JavaScript code that, when visited by an authenticated user of the management interface, executes arbitrary scripts in the context of the victim's browser session. This can lead to theft of session cookies, unauthorized commands, or redirection to malicious sites. The vulnerability does not require any privileges or authentication to trigger but does require the victim to interact with the malicious link. The CVSS 4.0 vector (AV:N/AC:L/AT:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N) reflects network attack vector, low attack complexity, no privileges required, user interaction required, and low scope and impact on confidentiality, integrity, and availability. No patches or exploits are currently publicly available, but the risk remains significant due to the device's role in network management and potential exposure to attackers. The vulnerability was published on February 27, 2026, and remains unpatched as of this report.

The primary impact of this reflected XSS vulnerability is on the confidentiality and integrity of the management interface sessions. Successful exploitation can allow attackers to hijack authenticated sessions, steal credentials, or perform unauthorized actions within the device's management console. This could lead to further compromise of the network infrastructure managed by the device, including configuration changes, denial of service, or pivoting to other internal systems. Since the device is a network gateway product, its compromise could have cascading effects on network security and availability. The requirement for user interaction (clicking a malicious link) somewhat limits the attack vector but does not eliminate risk, especially in environments where phishing or social engineering is common. Organizations relying on this device for critical network management functions could face operational disruptions and data breaches if the vulnerability is exploited.

To mitigate this vulnerability, organizations should first check for and apply any firmware updates or patches released by Shenzhen Hongyavision Technology Co., Ltd. that address CVE-2026-27756. In the absence of official patches, administrators should restrict access to the management interface to trusted networks only, ideally via VPN or secure management VLANs, to reduce exposure to external attackers. Implementing web application firewalls (WAFs) that can detect and block reflected XSS payloads targeting the device's management interface is recommended. Additionally, educating users and administrators about the risks of clicking unsolicited or suspicious links can reduce the likelihood of successful exploitation. Monitoring logs for unusual access patterns or repeated attempts to access the management interface with suspicious URLs can help detect exploitation attempts. Finally, consider disabling or limiting web management interfaces if alternative secure management methods (e.g., SSH with strong authentication) are available.