A critical SQL injection vulnerability in the Hisense TransTech Smart Bus Management System allows unauthenticated remote attackers to compromise backend database integrity.

This is a SQL injection vulnerability (CWE-89) located in the Page_Load function of the YZSoft/Forms/XForm/BM/BusComManagement/TireMng.aspx file. An unauthenticated attacker can exploit this remotely by manipulating the key argument.

Successful exploitation of this flaw allows an attacker to execute arbitrary SQL commands against the underlying database. Given the CVSS score of 7.3, this represents a significant risk: it could lead to unauthorized data exfiltration, unauthorized modification of transit management records, or potential service disruption.

Immediate Action: Since the vendor has not provided a patch, restrict access to the affected .aspx endpoint at the network or application level immediately. If possible, disable the vulnerable module until the vendor releases a secure update.

Proactive Monitoring: Review web access logs for unusual patterns, specifically monitoring for SQL syntax characters (e.g., single quotes, dashes, or semicolon) within the key parameter of the specified .aspx file.

Compensating Controls: Deploy a Web Application Firewall (WAF) rule designed to detect and block SQL injection signatures targeting the TireMng.aspx file to neutralize exploitation attempts.

Public Exploit Available: Yes — a published proof-of-concept exists, as documented in the linked researcher write-up at https://github.com/master-abc/cve/issues/15.

The absence of a vendor-supplied patch necessitates immediate defensive action to isolate the vulnerable component. Security teams should implement strict input validation at the WAF level and restrict network access to the management system to authorized segments only until a formal security update is released by Hisense TransTech.