CVE-2026-1449 identifies a SQL injection vulnerability in the Hisense TransTech Smart Bus Management System, affecting versions up to 20260113. The vulnerability resides in the Page_Load function of the YZSoft/Forms/XForm/BM/BusComManagement/TireMng.aspx file, where the 'key' parameter is improperly sanitized, allowing attackers to inject malicious SQL code. This flaw can be exploited remotely without any authentication or user interaction, making it highly accessible to threat actors. The injection could enable attackers to execute arbitrary SQL queries against the backend database, potentially leading to unauthorized data disclosure, data manipulation, or denial of service through database corruption or crashes. The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P) reflects a network attack vector with low complexity, no privileges or user interaction required, and partial impacts on confidentiality, integrity, and availability. Despite the exploit being publicly available, no active exploitation has been reported. The vendor has not issued any patches or advisories, increasing the risk for organizations relying on this system. Given the critical role of smart bus management systems in public transportation, exploitation could disrupt transit operations and compromise sensitive operational data.

The SQL injection vulnerability in the Hisense TransTech Smart Bus Management System could have significant impacts on organizations operating public transportation networks. Exploitation could lead to unauthorized access to sensitive data such as bus schedules, maintenance records, or operational parameters. Attackers might alter data integrity, causing incorrect tire management or maintenance schedules, potentially leading to safety risks. Availability could also be affected if attackers execute commands that disrupt database functionality, resulting in service outages or degraded system performance. Since the system is used in smart bus management, any disruption could cascade into broader public transportation delays or failures, impacting commuters and city infrastructure. The lack of vendor response and patches increases the window of exposure, raising the risk of targeted attacks, especially from actors interested in disrupting critical infrastructure or conducting espionage. Organizations worldwide using this system face operational, reputational, and safety risks if the vulnerability is exploited.

Given the absence of official patches, organizations should implement immediate compensating controls. First, restrict network access to the Smart Bus Management System's web interface by implementing strict firewall rules and network segmentation to limit exposure to trusted internal networks only. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the 'key' parameter in the vulnerable endpoint. Conduct thorough input validation and sanitization at the application layer if possible, or deploy reverse proxies that can filter malicious input. Monitor logs for unusual database queries or repeated access attempts to the TireMng.aspx page. Engage in active threat hunting for signs of exploitation attempts. Coordinate with Hisense TransTech for updates and consider alternative solutions or system upgrades if no patch is forthcoming. Finally, prepare incident response plans specific to this vulnerability to quickly contain any breaches.