CVE-2026-3818 identifies a SQL injection vulnerability in Tiandy Easy7 CMS Windows version 7.17.0, located in the /Easy7/apps/WebService/GetDBData.jsp endpoint. The flaw is due to insufficient input validation of the strTBName parameter, which is directly used in SQL queries without proper sanitization or parameterization. This allows an unauthenticated remote attacker to inject arbitrary SQL commands, potentially leading to unauthorized data access, data modification, or database corruption. The vulnerability can be exploited remotely without any user interaction or privileges, increasing its risk profile. The vendor was notified early but has not issued any response or patch, leaving systems exposed. Although no active exploitation has been reported, the public availability of an exploit increases the likelihood of attacks. The CVSS 4.0 vector indicates network attack vector, low attack complexity, no privileges or user interaction required, and impacts on confidentiality, integrity, and availability at a low level, resulting in a medium overall severity score of 6.9. The lack of vendor response and patch availability necessitates immediate defensive measures by users of the affected product version.

The SQL injection vulnerability allows attackers to execute arbitrary SQL commands on the backend database of Tiandy Easy7 CMS Windows 7.17.0. This can lead to unauthorized disclosure of sensitive information, unauthorized modification or deletion of data, and potential disruption of service. For organizations, this could mean exposure of confidential surveillance data, manipulation of system configurations, or complete compromise of the CMS environment. Given that the vulnerability requires no authentication and can be exploited remotely, attackers can leverage this flaw to gain footholds in networks, escalate privileges, or move laterally within an organization. The absence of vendor patches increases the risk of exploitation, especially since proof-of-concept exploits are publicly available. This could impact organizations relying on Tiandy Easy7 CMS for video management or security monitoring, potentially undermining physical security and data integrity.

Since no official patch or vendor response is available, organizations should implement immediate compensating controls. These include restricting network access to the affected CMS system by limiting exposure to trusted internal networks or VPNs only. Employ web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the strTBName parameter or suspicious requests to /Easy7/apps/WebService/GetDBData.jsp. Conduct thorough input validation and sanitization at the application or proxy level if possible. Monitor logs for unusual database query patterns or repeated access attempts to the vulnerable endpoint. Consider isolating or segmenting the CMS system to reduce potential lateral movement. Organizations should also plan for rapid patch deployment once the vendor releases an official fix. Regular backups of the CMS database and configurations should be maintained to enable recovery in case of compromise.